Physicseasy · Past Paper
According to Ohm's law, if the resistance is kept constant, current is directly proportional to:
ATemperature
BPotential difference
CLength of wire
DArea of cross-section
✓ Correct Answer: B — Potential difference
Ohm's law states that V = IR, so for a constant R, the current (I) increases linearly with the potential difference (V).
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