Ohm's Law is written as:

V = I × R — Ohm's Law: V = IR.

A device that turns movement into electricity is a:

generator — A generator turns movement into electricity.

A device that turns electricity into movement is a:

motor — A motor turns electricity into movement.

JOMKELAS

Chapter 6

Electricity and Magnetism

Ohm's Law, electromagnetic induction, generators and motors — with an interactive exercise.

Electricity and magnetism are closely linked. In a circuit, voltage, current and resistance are related by Ohm's Law.

Ohm's Law

$V = I \times R$ Voltage (V) = Current (I) × Resistance (R)

A moving magnet near a coil produces a current — electromagnetic induction — which is how a generator works. A motor does the reverse: current makes movement.

Remember

$V = IR$.
Generator: movement → electricity · Motor: electricity → movement.

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