Q139 / 180 · KCET 2025 · Physics

Charges are uniformly spread on the surface of a conducting sphere. The electric field from the centre of sphere to a point outside the sphere varies with distance $r$ from the centre as

Correct answer
A
B
C
D

Solution

For conducting sphere $\mathrm{E}=0$ for $\mathrm{r} \lt \mathrm{R}$ $E=\frac{k Q}{r^2}$ for $r \geq R$ So graph must be (1)

Hence, the correct answer is option: 'A'.

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