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).
Share this question
More from Physics
- A hydraulic press works on the principle of:
- If a man pushes a wall and the wall does not move, the work done is:
- A cyclist moves with a speed of 15 m/s. This is:
- A block of mass M is pulled along a horizontal frictionless surface by a rope of mass m. A force F is applied at one end of the rope. The work done by the rope on the block is:
- The density of a substance is 2500 kg/m³. Its relative density is: