A hollow metal sphere of radius 6 cm is charged such that the potential on its surface is 12 V.What is the potential at the centre of the sphere?

Explanation

To solve the problem, we need to understand the properties of electric potential in relation to a charged hollow metal sphere.

### Step-by-Step Solution:

1. **Understanding the Properties of a Hollow Metal Sphere**:
- A hollow metal sphere, when charged, has its charge distributed uniformly on its surface.
- The electric field inside a hollow conductor is zero. This means that there is no electric field inside the sphere.

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