Question:medium

In the given circuit, current passing through \( R \) is 1 ampere. Now polarity of one cell is reversed, then current through \( R \) becomes \( \frac{\alpha}{5} \) Amp, then find \( \alpha \).

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When the polarity of a cell is reversed in a circuit, the net voltage changes, which affects the current. Use Kirchhoff’s law and Ohm’s law to find the current before and after the polarity reversal.

Updated On: Apr 7, 2026

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Correct Answer: 3

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In the given circuit, current passing through \( R \) is 1 ampere. Now polarity of one cell is reversed, then current through \( R \) becomes \( \frac{\alpha}{5} \) Amp, then find \( \alpha \).

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Correct Answer: 3

Solution and Explanation

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