Ohm’s law

Voltage shoves; resistance wears ankle weights.

The idea behind the cue

For an ohmic resistor, V = IR.

Short & simple

Voltage shoves; resistance wears ankle weights.

Acronym

VIR: Voltage = Current × Resistance.

Story

Current tries to dance through a wire; voltage pushes and resistance adds ridiculous ankle weights.

Not every component has constant resistance.

Check your understanding

A 6 V potential difference is across a 3 Ω resistor. Current is:

A. 2 A

B. 18 A

C. 0.5 A

D. 9 A

Reveal explanation

2 A

For an ohmic resistor, V = IR.

Opening your concept…