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Current electricity by Mind Map: Current electricity
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Current electricity

Potential difference

The energy possessed by 1 unit of charge at any one point in a circuit.

V=W/Q

E.M.F (electromotive force)

The work done used to drive one unit of charge round a complete circuit.

Current

The time taken to drive one unit of charge round a complete circuit

I=Q/T

Voltage

Resistance

Ohm's law

R=V/I (constant)

R is inversely proportional to area

R is directly proportional to length

P=RA/L