STATEMENT-1: For practical purposes the earth used as a reference at zero potential in electrical circuits.
STATEMENT 2: The electrical potential of a sphere of radius R with charge Q uniformly distributed on the surface is given by $\frac{Q}{4 π ε_{0} R}$ .

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Statement -1 is True ,statement 2 is True ;statement -2 is NOT a correct expiation for statement 1

Statement -1 is True , Statement -2 is True; Statement 2 is a correct explanation for statement 1

Statement 1 is True , statement -2 is false

Statement 1 is false, statement 2 is True

answer is B.

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Detailed Solution

The earth is used as are reference at zero potential in electrical circuits for practical purposes.
For spherical capacitor, capacitance $C = 4 π ε_{0} R$ and electrical potential $V = \frac{Q}{C} = \frac{Q}{4 π ε_{0} R}$

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