Question

13 A metal sphere of 100 mm radius has a charge of
4.25 * 10-9 coul. What is the potential? (a) at
its surface (b) at its centre.
х
What is the potential energy of a charge of 2.5
10-6 C at a point 150 mm from the centre of
sphere?​

Answer 1

Answer:

Here is your answer

Explanation:

We have to find the electric potential inside a uniformly charged conducting sphere of Radius R and charge Q.

We know that electric field inside a conducting sphere is zero, so the potential remains constant at the value it reaches the surface. V

inside

=

4πε

0

1

R

Q

Answer 2

Explanation:

at its surface

v=kq/r

v=(9×10^9)(4.25×10^-9)/100×10^-3

=3.825×10^2 volts

at its centre

v=3.825×10^2 volts