A hollow metal sphere of radius 5 cm is charged such that potential...

Question

A hollow metal sphere of radius 5 cm is charged such that potential on its surface is 10 V. What is the potential at the centre of the sphere?

Accepted Answer

✅ Answer: 10 V

📌 Key Property of Hollow Spherical Shell:

• Inside a charged spherical shell, the electric field E = 0.
• Since E = −dV/dr = 0, the potential is constant throughout the interior.
• This constant value equals the surface potential.

Given:
• Surface potential = 10 V

∴ Potential at the centre = 10 V (same as surface).

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