STATEMENT-1: For practical purposes, the earth is used as a reference at zero potencial in electrical circuits. and
STATEMENT-2: The electrical potential of a sphere of radius R with charge Q uniformly distributed on the surface is given by `(Q)/(4piepsilon_0R)`.

Options

A. Statement I is true, Statement II is True, Statement II is a correct explanation for Statement I.
B. Statement I is True, Statement II is True, Statement II is not a correct explanation for Statement I.
C. Statement I is True, Statement II is False.
D. Statement I is False, Statement II is True.

Explanation

To analyze the given statements, we will evaluate each statement individually and then determine their relationship.

### Step 1: Evaluate Statement 1
**Statement 1:** For practical purposes, the earth is used as a reference at zero potential in electrical circuits.

**Explanation:**
- In electrical circuits, it is common practice to use the Earth as a reference point for potential. This is because the Earth can be considered a large conductor that can absorb or supply an infinite amount of charge without significantly changing its potential.
- Therefore, when we say that the Earth is at zero potential, we mean that it serves as a common reference point for measuring electrical potential in circuits.
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