electricity and magnetism

36 terms by rm14659

Create a new folder

Advertisement Upgrade to remove ads

Vocab and other things to know for freshman year honors physical science... electricity and magnetism

magnetic fields

a force field that fills the space around every magnet or current-carrying wire... another magnet or current-carrying wire that enters will experience a magnetic field

magnetic domains

a microscopic cluster of atoms with their magnetic fields aligned

christian oersted

discovered that moving charges in an electric current produces a magnetic field in a circular pattern

oersted's discovery

more current=more magnetic field

right thumb rule

direction of current determines the direction of the magnetic field

electromagnet

TEMPORARY magnet with a field produced by an electric current; usually in the form of a wire coiled around a piece of iron

property of electromagnets

increase current, you increase magnetic field

property of electromagnets

add more turns, increase magnetic field

property of electromagnets

have a north and a south pole

property of electromagnets

when placed in a magnetic field, it will align itself along the magnetic field lines (like a compass)

property of electromagnets

will attract magnetic materials and be attracted and repelled by other magnets

galvanometer

a device that uses an electromagnet to measure electric current

electric motor

a device that changes electrical energy into mechanical energy

electric motor

contains an electromagnet which rotates freely to the poles of the permanent magnet, permanent magnet, coil, and electric current (battery)

generator

a machine that produces electric current by rotating a coil within a stationary magnetic field

transformer

a device for increasing or decreasing voltage through electromagnetic induction

related

magnetism and electricity are ___

motion of electric charges

magnetism is produced by the ___ _ ___ ___

motion of a magnet

faraday and henry discovered that electric current can be produced by ___ _ _ ___

magnetic field in a the loop

voltage is induced in a loop of wire if there is a change in the ___ ___ _ _ ___

electromagnetic induction

the phenomenon that electric current can be produced by the motion of a magnet and the voltage is induced if there is a change in the magnetic field is known as ___ ___.

faraday and henry

___ & ___ discovered that electric current can be produced by the motion of a magnet

doubles

when a magnet is plunged in and out of a coil of wire, voltage is induced in the coil. If the rate of the in-and-out motion of the magnet is doubled, the induced voltage ___

doubles

if the number of loops in the coil is doubled, the induced voltage ___

electric field

a rapidly changing magnetic field in any region of space induces a rapidly changing __ ___

magnetic field

a rapidly changing electric field induces a rapidly changing ___ ___

electromagnetic waves

the generation of electric and magnetic fields makes up ___ ___

iron, nickel, cobalt

magnetic elements

solenoid

a current-carrying wire that acts like a magnet when the current passes through it

commutator

a device for reversing the direction of a current

increases strength

more loops and a higher current through a solenoid

parts of an electromagnet

wire, power source, and iron core

step-up

used from generator to power lines

step-down

used from power lines to buildings

AC

current changes direction every 1/2 turn in an electromagnet generator

DC

1 complete circuit, 1 direction

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set