Terms in this set (49)
Rate of flow of charges
Opposition to flow of charges
Potential difference that causes charges to flow
Voltage = Current x Resistance
All resistors are connected in a line where there is only one path
More than one path for current is to travel through
Same current throughout the circuit
Same voltage throughout
Rate of energy transfer in a unit
P = IV = 1^2 R = V^2/R
Device that stores electrical energy by trapping electric fields due to stored charges
Unit of charge
Farad can also be expressed as
If the space between the two conductors is filled with an insulating medium whose molecules undergo polarization then the capacitance of the system is _____
In order to increase the charge storing capacity, capacitors are therefore always designed as two pieces of metal separated by an ________ medium
The electrons that make up a __________ can move freely.
Added charge can also move freely
The electrons that make up an ___________ can shift a little, so
an outside external charge can polarize a neutral insulator.
Also, added charge is stuck in place
All electric charge generates an ________
is the electrical force, or "pressure", that causes current to flow in a circuit.
the movement of electrical charge - the flow of electrons through the electronic circuit.
a material (usually a metal such as
copper) that allows electric current to pass easily.
(plastic, glass) which
prevents the flow of electricity through it.
Ideal conductor = ____ resistivity
Ideal insulator = ______ resistivity
Device that converts chemical energy to electric energy
Group of cells
Measures current in a circuit
MEasures the potential difference between any two points in a circuit
Connected in parallel to the resistance wire AB
Connected in series with circuit
R = I/A
How do you measure resistivity
C = Q/V
How do you measure capacitance
Capacitors consist of two parallel conductive plates (usually a metal) which are prevented from touching each other (separated) by an insulating material called the "________".
When you rub one material to another, they are charged by
Both have the same
When charged object touches to a neutral object, they ____________________ charge.
If the objects have same type of charge then the force is repulsive, if they have opposite charges then force is attractive.
Repulsive or attractive electrical forces is equal in magnitude but opposite in direction, it does not depend on the magnitudes of charges.
F = k q1 q2
A charged particle exerts a force on particles around it. We can call the influence of this force on surroundings as _________
Electric field is a vector quantity. And it decreases with the ________ distance
Force Acting on a Charged Particle inside Electric Field
If q is positive then F=+E.q and directions of Force and Electric Field are the
If q is negative then F=-E.q and directions of Force and Electric Field are the
F = k q1 q2
Electric potential energy
We learned that in work power energy chapter, objects have potential energy because of their positions. In this case charge in an electric field has also ____________ because of its positions.
insulating material or a very poor conductor of electric current.
when a dielectric is placed in an electric field/ voltage is applied, it is __________
the ability of a system to store an electric charge.