A hollow metal sphere has a potential of +300 V with respect to ground (defined to be at V = 0) and a charge of `5.0 xx 10^(-9) C`. Find the electric potential at the center of the sphere.

Explanation

To find the electric potential at the center of a hollow metal sphere, we can follow these steps:

### Step 1: Understand the properties of a hollow metal sphere
A hollow metal sphere has the following properties:
- The electric field inside the conductor is zero.
- The electric potential is constant throughout the conductor.

### Step 2: Identify the given information
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