Physics · Electrostatic Potential and Capacitance
The electrostatic potential on the axis of a uniformly charged disc with uniform surface charge density 'σ' and radius 'R' at a distance 'Z' from its centre is:
- 1-σ2ε0|Z|
- 2σ2ε0√(R2 + Z2)
- 3σ2ε0(√(R2 + Z2) - |Z|)✓
- 4σ2ε0R
Correct answer
σ2ε0(√(R2 + Z2) - |Z|)
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