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

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Assertion is correct. yes, we use earth as a reference at zero potential in all practical purpose.
Reason is the formula which we generally derive in our class but this is not explaining about the statement given in assertion.
Hence, the answer is both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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