Current Of Electricity

Question 1

Current, I

Answer 1

Rate of flow of electric charges through a given section of an electric conductor.
I=Q/t

Question 2

Electromotive force, E

Answer 2

Work done by a source in driving a unit charge around a complete circuit.

E=W/Q

Question 3

Potential Difference, V

Answer 3

Work done to drive a unit charge through a component:

V=W/Q

Question 4

Resistance, R

Answer 4

Ratio of potential difference across a component to the current flowing through it.

R=V/I

Question 5

Ohm’s Law

Answer 5

The current flowing through a metallic conductor is directly proportional to the potential difference applied across its ends, provided that the physical conditions are constant