If the potential at a point which is 1m from a charge is 1 volt, them the potential at a pont which is 2m from the same charge will be:
- A.2v
- B.1v
- C.0.5v✓
- D.3v
Why C is correct
Electric potential V due to point charge varies as 1/r (V = kQ/r). Doubling the distance halves the potential, so 1 V → 0.5 V at 2 m.