First slide

Electrostatic potential

Question

The variation of electrostatic potential with radial distance r from the centre of a positively charged metallic thin shell of radius R is given by the graph

Moderate

A
B
C
D

Solution

$\begin{array}{l} for r < R \\ V = \frac{q}{4 π ε_{0} R} = constant \\ for r \geq R \\ V = \frac{q}{4 π ε_{0} r} = V \propto \frac{1}{r} \end{array}$

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