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Study sets matching "physics electromagnetic"

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Study sets matching "physics electromagnetic"

Physics: Electromagnetism
electric current
Magnetic field
Magnetic Pole
current carrying wire
A flow of electric charge.
the region around a magnet where the magnetic force is exerted
The ends of a magnetic object, where the magnetic force is st…
An electric current produces a magnetic field around it
electric current
A flow of electric charge.
Magnetic field
the region around a magnet where the magnetic force is exerted
34 terms
physics electromagnetic
absorbed
amplitude
attenuated
electromagnetic energy
the condition of light when the light photons are stopped by…
height of a wave. large amplitude= stronger wavelength
when some photons are absorbed but some are transmitted throu…
pure energy, rays have both electrical energy and magnetic en…
absorbed
the condition of light when the light photons are stopped by…
amplitude
height of a wave. large amplitude= stronger wavelength
26 terms
Physics: Waves and Electromagnetic Radiation
What is a wave?
What is a mechanical wave?
What is an electromagnetic wave?
Does a mechanical wave need a medium…
Something that transfers energy from one place to another.
A wave that transfers energy from one place to another by dis…
A wave that transfers energy from one place to another by ele…
Yes.
What is a wave?
Something that transfers energy from one place to another.
What is a mechanical wave?
A wave that transfers energy from one place to another by dis…
21 terms
Physics Electromagnetic
Electricity
Electrostatics
Conservation Of Charge
Coulombs Law
General term for electoral phenomena
The study of electric charge at rest
Electric charge is neither created nor destroyed
The relationship between electrical force, charge & distance
Electricity
General term for electoral phenomena
Electrostatics
The study of electric charge at rest
38 terms
Physics: Electromagnetism
False
False
c.
b.
The right hand thumb rule indicates that the thumb points in…
A transformer can convert one form of energy to another. (Tru…
A magnetic field is produced by... a. electric charges both at…
A generator is a device that converts... a. electrical energy t…
False
The right hand thumb rule indicates that the thumb points in…
False
A transformer can convert one form of energy to another. (Tru…
12 terms
LC Physics Electromagnetic Induction
Faraday's Law of electromagnetic induc…
Electromagnetic induction
Lenz's law of electromagnetic induction
Difference between transformer and ind…
The induced emf is proportional to the rate of change in flux
An emf is induced in a conductor when the magnetic field surr…
The direction of an induced current is such as to oppose the…
Transformer has ac input and output... Induction coil has dc inp…
Faraday's Law of electromagnetic induc…
The induced emf is proportional to the rate of change in flux
Electromagnetic induction
An emf is induced in a conductor when the magnetic field surr…
13 terms
Physics-Electromagnetism
current
magnetically hard
magnetically soft
magnetic field lines
a flow of charge
material that retains magnetism after being magnetised
material that gains and loses magnetism easily
show strength and direction of field
current
a flow of charge
magnetically hard
material that retains magnetism after being magnetised
42 terms
PHYSICS: Electromagnetism
Electric Field
Coulomb's Law
Elementary Charge
Induced Charge
F/q... E=kQ/r^2... electrostatic force per unit charge (N/C)
Newtons... F=kQ1Q2/r^2... The law that states the relationship betw…
1.6022 x 10^-19 C
the static charge in one object that is caused by the presenc…
Electric Field
F/q... E=kQ/r^2... electrostatic force per unit charge (N/C)
Coulomb's Law
Newtons... F=kQ1Q2/r^2... The law that states the relationship betw…
23 terms
Physics AS - Electromagnetic Waves
λ range of Radio Waves
λ range of Microwaves
λ range of Infrared
λ range of Visible Light
>10⁶ to 10⁻¹ m
10⁻¹ to 10⁻³ m
10⁻³ to 7x10⁻⁷ m
7x10⁻⁷ (red) to 4x10⁻⁷ (blue) m
λ range of Radio Waves
>10⁶ to 10⁻¹ m
λ range of Microwaves
10⁻¹ to 10⁻³ m
32 terms
physics: electromagnetism
direction of magnetic field lines
earth's north pole is...
magnetic field around a wire is...
fingers curl in a circular motion to w…
north to south
south magnetic pole
circular
right hand rule
direction of magnetic field lines
north to south
earth's north pole is...
south magnetic pole
5 terms
Physics - Electromagnetism
Right Hand Solenoid Rule
Electromagnetic Induction
Factors that influence the magnitude o…
Faraday's Law for Electromagnetic Indu…
Hold the solenoid in your right hand, with the bent fingers p…
The phenomenon where an emf, as well as an electrical current…
-The strength of the magnet (strong magnet = stronger magneti…
An emf is induced in a conductor when the magnetic field that…
Right Hand Solenoid Rule
Hold the solenoid in your right hand, with the bent fingers p…
Electromagnetic Induction
The phenomenon where an emf, as well as an electrical current…
21 terms
Physics: Electromagnetism
lodestone, compass
arrangement of its atoms
domains
heat, beat
the earliest magnets were found naturally in the mineral ____…
magnetism is the force of attraction or repulsion of a magnet…
small areas where the groups (billions) of atoms are aligned…
to create a temporary magnet: ____ it or ____ it in presence…
lodestone, compass
the earliest magnets were found naturally in the mineral ____…
arrangement of its atoms
magnetism is the force of attraction or repulsion of a magnet…
17 terms
Conceptual Physics- Electromagnetic Spectrum
Spectrum
electromagnetic wave
electromagnetic radiation
photon
A broad range of related ideas, quantities, activities, or va…
Transverse waves that transfer electrical and magnetic energy.
The energy transferred through space by electromagnetic waves.
A tiny particle or packet of light energy.
Spectrum
A broad range of related ideas, quantities, activities, or va…
electromagnetic wave
Transverse waves that transfer electrical and magnetic energy.
21 terms
Physics - Electromagnetism
Field lines show
Produce Movement
Size of force on wire increased by inc…
Left Hand ... First finger
Shape... Direction... Strength
Using Magnetic Effect of Electricity
Current... Field Strength... No of wires in field
Field
Field lines show
Shape... Direction... Strength
Produce Movement
Using Magnetic Effect of Electricity
Physics: Electromagnetism
generators
motors
transformers
step-up
...
...
...
...
generators
...
motors
...
17 terms
Physics electromagnetism
Magnetism
Electricity
Force of attraction measurements
1 ohm
The force of attraction between two magnetic poles
The force between two electrically charged particles
(N) F ~ q1 x q2 / d2
conductor produces a 1V voltage with a 1 A current
Magnetism
The force of attraction between two magnetic poles
Electricity
The force between two electrically charged particles
38 terms
Physics electromagnetism
Electricity
Electromagnetism
Electrostatics
Electric charge
Relating to the phenomenon of interactions between electric c…
One of the four fundamental forces in the universe
Study of charged objects at rest
Fundamental property of matter based on the atoms and e,p,n
Electricity
Relating to the phenomenon of interactions between electric c…
Electromagnetism
One of the four fundamental forces in the universe
Physics- Electromagnetism
What is electromagnetism?
Where are electromagnets used?
How do electromagnets work?
Right hand grip rule-
When an electric current makes something magnetic
Electric bell, locking devices, electric motors, lifting devi…
When a current flows through a wire, a magnetic field is prod…
Thumb- direction of current. Fingers around wire- direction o…
What is electromagnetism?
When an electric current makes something magnetic
Where are electromagnets used?
Electric bell, locking devices, electric motors, lifting devi…
32 terms
PHYSICS-Electromagnetism
Electromagnet
Permanent magnet
What are the poles of a magnet
How do magnets interact with other mag…
Very powerful. Can be turned on and off
bar or horseshoe magnet
north (north-seeking) or south (south-seeking)
they exert a force on another. The force is repulsive between…
Electromagnet
Very powerful. Can be turned on and off
Permanent magnet
bar or horseshoe magnet
15 terms
Physics- Electromagnets
Generator
Motor
Magnetic induction
Magnetic flux
A machine that converts kinetic energy to electrical energy b…
A small and powerful engine
method of inducing current by changing the magnetic flux thro…
The number of magnetic field lines passing through a close su…
Generator
A machine that converts kinetic energy to electrical energy b…
Motor
A small and powerful engine
123 terms
Electromagnetism/ physics
ELECTROSTATICS
ELECTRONS AND PROTONS
ELECTRIFICATION
EARTHS PART IN ELECTRIFICATION
The study of stationary electric charges
Smallest units of electric charge. Equal in magnetude opposit…
Process of electron charges being added or subtracted from an…
Takes in excess electrical charges. Earth is zero or ground p…
ELECTROSTATICS
The study of stationary electric charges
ELECTRONS AND PROTONS
Smallest units of electric charge. Equal in magnetude opposit…
19 terms
Physics-electromagnetism
What is a magnetic field?
How are magnetic fields created?
What is the direction of a bar magnet?
What is the strength of a bar magnet
A region where magnetic materials feel a force
By magnets or current flowing through a wire
North to south
Field is stronger when the lines are closer
What is a magnetic field?
A region where magnetic materials feel a force
How are magnetic fields created?
By magnets or current flowing through a wire
10 terms
Physics- Electromagnetism
Magnetic field
Rules for magnetic field lines
What happens when an electric current…
What do you have to do to make a curre…
The area around a magnet where other magnets will fell a force.
Can't cross. density shows strength. Direction is from north…
A magnetic field is produced
Has to be a movement between magnet and coil and this creates…
Magnetic field
The area around a magnet where other magnets will fell a force.
Rules for magnetic field lines
Can't cross. density shows strength. Direction is from north…
9 terms
physics electromagnetism
houston
electron of mass
an electron moves
generator
F=ILBsin(theta)
B=mg/qv
v=E/B
NBAwsinwt
houston
F=ILBsin(theta)
electron of mass
B=mg/qv
19 terms
Physics Electromagnetism
series circuit
parallel circuit
resistance in parallel
resistance in series
the charge must go through all the resistors before returning…
the charge can go through ANY of the resistors before returni…
total resistance goes down
total resistance goes up
series circuit
the charge must go through all the resistors before returning…
parallel circuit
the charge can go through ANY of the resistors before returni…
9 terms
Physics electromagnetism
More current, more coils, keep soft ir…
resistance is how hard the current fin…
Resistance= volts/current I/R
Amps (A)
How to increase the magnet field strengh
Resistance
Resistance equation
What is current measured in
More current, more coils, keep soft ir…
How to increase the magnet field strengh
resistance is how hard the current fin…
Resistance
15 terms
IGCSE Physics - Electromagnetic Induction
Electromagnetic induction
To increase induced voltage
To reverse direction of induced current
Methods of generating electricity
voltage induced when conductor cuts magnetic field lines
Increase:... -no. coils... -strength of magnet... -speed at which fiel…
Reverse:... -poles... -direction which magnet cuts field
1) move conductor across magnetic field... 2) move magnet throug…
Electromagnetic induction
voltage induced when conductor cuts magnetic field lines
To increase induced voltage
Increase:... -no. coils... -strength of magnet... -speed at which fiel…
31 terms
IB Physics Electromagnetic Induction
Define electromotive force (emf).
Describe the inducing of an emf by rel…
Derive the formula for the e.m.f. indu…
Define magnetic flux.
•Total electrical energy per unit charge (voltage) supplied b…
When a conductor moves through a magnetic field, an e.m.f. is…
Consider an electron in a conductor of length,l, moving in a…
The product of the normal component magnetic field strength a…
Define electromotive force (emf).
•Total electrical energy per unit charge (voltage) supplied b…
Describe the inducing of an emf by rel…
When a conductor moves through a magnetic field, an e.m.f. is…
33 terms
Physics Electromagnetic Radiation
________ may be pictured as a small bu…
Who recognized the unique nature of li…
What is named an atom of light?
Modern usage of photon is:
photon
Ancient Greeks
photon
the smallest quantity of any type of electromagnetic radiation.
________ may be pictured as a small bu…
photon
Who recognized the unique nature of li…
Ancient Greeks
19 terms
Electromagnetism (physics)
Electromagnetism
Oersted
Magnetic field
right hand rule
branch of physics that deals with the relationship between el…
danish physicist who first showed the relationship between el…
What always surrounds a conductor in which a current is flowi…
How do you determine the direction of a magnetic field?
Electromagnetism
branch of physics that deals with the relationship between el…
Oersted
danish physicist who first showed the relationship between el…
30 terms
physics: electromagnetism
electromagnetism
electromagnetic phenomena
oersted 1820
various electromagnetic relationships
branch of physics that deals with the relationship between el…
a magnetic field always surrounds a conductor in which an ele…
who came up with the electromagnetic phenomena ans when
what do fleming's hand rules help us remember
electromagnetism
branch of physics that deals with the relationship between el…
electromagnetic phenomena
a magnetic field always surrounds a conductor in which an ele…
13 terms
Physics- Electromagnetism
Electromagnetism
Oersted discovered...
Left Thumb Rule
Helix
relationship between electricity & magnetism
-magnetic field always surrounds a current carrying conductor…
-thumb points direction of CURRENT flow... -fingers point direct…
coil of wire
Electromagnetism
relationship between electricity & magnetism
Oersted discovered...
-magnetic field always surrounds a current carrying conductor…
15 terms
Physics- Electromagnets
Generator
Motor
Magnetic induction
Magnetic flux
A machine that converts kinetic energy to electrical energy b…
A small and powerful engine
method of inducing current by changing the magnetic flux thro…
The number of magnetic field lines passing through a close su…
Generator
A machine that converts kinetic energy to electrical energy b…
Motor
A small and powerful engine
32 terms
Physics electromagnetism
Bar magnets are
Bae magenta have
North and south
Opposite poles
Permanent magnets
Two poles
...
Attract
Bar magnets are
Permanent magnets
Bae magenta have
Two poles
18 terms
physics - electromagnetism
what is a magnet
ferrous
non ferrous
properties of magnets (4)
an object that can attract magnetic materials such as brass,…
iron and all types of steel
all other metals
1 - a magnet has a north seeking pole an a south seeking pole…
what is a magnet
an object that can attract magnetic materials such as brass,…
ferrous
iron and all types of steel
34 terms
physics: electromagnetism
moving
electrons
attract
create new poles/more than one magnet
The source of magnetism in naturally occurring magnets is __…
An iron rod becomes magnetic when the net spins of its __ poi…
If the north pole of one magnet is brought near the south pol…
What happens if you break a bar magnet in half?
moving
The source of magnetism in naturally occurring magnets is __…
electrons
An iron rod becomes magnetic when the net spins of its __ poi…
22 terms
physics: electromagnetic energy
xrays
frequency
frequency cycles
Wavelength
travel at the speed of light... - 186000 mi/sec... - 3 X 10^8 m/s
the number of wavelengths that pass a point of observation pe…
1 cycle in the US is 1/60 of a second
the distance from one crest to another... - the shorter the wav…
xrays
travel at the speed of light... - 186000 mi/sec... - 3 X 10^8 m/s
frequency
the number of wavelengths that pass a point of observation pe…
32 terms
Physics: Electromagnetism
Maxwell's Equations
Maxwell's Equations
Maxwell's Equations
Current
Grouped by Oliver Heavside
Equivalent to Jefimenko's equations when combined with contin…
Allowed for the discovery that the inverse of the square root…
magnetic field generated by them is described by the Biot-Sav…
Maxwell's Equations
Grouped by Oliver Heavside
Maxwell's Equations
Equivalent to Jefimenko's equations when combined with contin…
13 terms
physics - electromagnetism
electromagnetism
magnetism
magnet
magnetic field
The way in which electric and magnetic forces interact
A property of some materials in which there is a force of rep…
has a north seeking pole and as well has a south seeking pole…
The area of magnetic force around a magnet - north to south
electromagnetism
The way in which electric and magnetic forces interact
magnetism
A property of some materials in which there is a force of rep…
7 terms
Physics- electromagnetism
What is a magnetic field
4 magnetic materials
Which way does a magnetic field line t…
What rule do you use to see which way…
A region where magnetic materials and also wires carrying cur…
Iron, cobalt, nickel, steel
Away from north towards south
The right hand thumb rule
What is a magnetic field
A region where magnetic materials and also wires carrying cur…
4 magnetic materials
Iron, cobalt, nickel, steel
21 terms
Physics Electromagnetism
Domain
Soft Iron
Hard Iron
What happens when you break a magnet?
A group of atoms whose magnetic properties are aligned.
Temporarily aligned. This means that it is easier to change t…
Permanently aligned
They become two separate magnets.
Domain
A group of atoms whose magnetic properties are aligned.
Soft Iron
Temporarily aligned. This means that it is easier to change t…
17 terms
physics: Electromagnetism
electromagnetism
what does a magnetic field surround?
left thumb rule
if there is no current is there a magn…
branch of physics that deals with the relationship between el…
current carrying conductor
thumb points direction of current flow... fingers point directio…
no
electromagnetism
branch of physics that deals with the relationship between el…
what does a magnetic field surround?
current carrying conductor
18 terms
LC Physics Electromagnetic Induction
Faraday's Law of electromagnetic induc…
Describe an experiment to demonstrate…
Electromagnetic induction
A hollow copper pipe and a hollow glas…
The induced emf is proportional to the rate of change in flux
1. Set up the experiment as shown below. ... 2. As the north pol…
An emf is induced in a conductor when the magnetic field surr…
> Falling magnet creates changing magnetic flux(3)... > EMF indu…
Faraday's Law of electromagnetic induc…
The induced emf is proportional to the rate of change in flux
Describe an experiment to demonstrate…
1. Set up the experiment as shown below. ... 2. As the north pol…
8 terms
GCSE Physics - Electromagnetic Spectrum
Radio Wave
Microwave
Infrared Wave
Visible Light
- Speed = 300,000,000 m/s... - E.g. Television Signals... - Large w…
- Speed = 300,000,000 m/s... - E.g. Cooking, Satelite Communicat…
- Speed = 300,000,000 m/s... - E.g. Heaters, Night Vision ... - Eve…
- Speed = 300,000,000 m/s... - E.g. Vision
Radio Wave
- Speed = 300,000,000 m/s... - E.g. Television Signals... - Large w…
Microwave
- Speed = 300,000,000 m/s... - E.g. Cooking, Satelite Communicat…
19 terms
Physics - Electromagnetism
Magnet
Permanent Magnet
Ferromagnetic Materials
History of Magnets
A magnet is a material that produces a magnetic field. A magn…
A permanent magnet is a magnet that has its own persistent ma…
These are materials that can be divided into 'soft' (can be m…
- Greeks found iron ore 2000 years ago in a place called Magn…
Magnet
A magnet is a material that produces a magnetic field. A magn…
Permanent Magnet
A permanent magnet is a magnet that has its own persistent ma…
52 terms
Physics: Electromagnetism
Define electromagnetism
What is the purpose/rationale for elec…
Which is the 1st experiment to observe…
Describe the results of the Oersted Ex…
branch of physics that deals with the relationship between el…
replaces the use of a battery with electromagnetic induction
Oersted Experiment
When a compass was placed near a wire with current it would p…
Define electromagnetism
branch of physics that deals with the relationship between el…
What is the purpose/rationale for elec…
replaces the use of a battery with electromagnetic induction
77 terms
Physics Electricity, Electromagnetic, Radiation, and Electromagnetism
The 4 properties of photons are:
The smallest quantity of any type of e…
What is the velocity of all electromag…
The rate of rise and fall of a sine wa…
frequency, wavelength, velocity, amplitude
photon
3 10^8 m/s
frequency
The 4 properties of photons are:
frequency, wavelength, velocity, amplitude
The smallest quantity of any type of e…
photon
10 terms
Electromagnetism- Physics
Using only common materials in your la…
Once you've created an e-m field, as i…
Let's say that you create an e-m field…
If you use a compass to show the prese…
A wire carrying a direct current will give you an electromagn…
Place the wire across the compass and the magnetic needle wil…
The e-m field changes the direction of the needle's deflection.
If you increase the voltage, the needle's compass would defle…
Using only common materials in your la…
A wire carrying a direct current will give you an electromagn…
Once you've created an e-m field, as i…
Place the wire across the compass and the magnetic needle wil…
18 terms
IGCSE Physics Magnetism and Electromagnetism
An object which attracts magnetic mate…
Cobalt, iron, nickel and steel
North and south poles
The region around the magnet where the…
What is a magnet?
What are the names the four magnetic materials? In alphabetic…
What are the names of the two magnetic poles of a magnet?
What is magnetic field?
An object which attracts magnetic mate…
What is a magnet?
Cobalt, iron, nickel and steel
What are the names the four magnetic materials? In alphabetic…
21 terms
Physics - Electromagnetic Terms
Electricity
Electrostatics
Conservation of charge
Coulomb's law
general term for electrical phenomena
the study of electric charge at rest (not in motion, as in el…
electric charge is neither created nor destroyed. the total c…
the relationship between electrical force, charge, and distan…
Electricity
general term for electrical phenomena
Electrostatics
the study of electric charge at rest (not in motion, as in el…
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