Question

If a charged spherical conductor of radius 10 cm has potential V at a point distant 5 cm from its centre, then the potential at a point distance 15 cm from the centre will be

• A. 3 V
• B.
• C.
• D.

Answer 1

Answer: (C)

Answer 2

: The potential at any point inside a charged conductor is same as on its surface,

$\mathrm { V } = \frac { \mathrm { q } } { 4 \pi \varepsilon _ { 0 } \mathrm { r } } = \frac { \mathrm { q } } { 4 \pi \varepsilon _ { 0 } \times 10 }$ (r = 10 m) …(i)

At

(using (i))