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Series Combination of Cells

Deduce the ex...

Question

Deduce the expression for the the equivalent resistance of three resistors connected in Parallel.

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Solution

In parallel we know that voltage remains same
$I = I_{1} + I_{2} + I_{3} \frac{V}{R_{e q}} = \frac{V}{R_{1}} + \frac{V}{R_{2}} + \frac{V}{R_{3}} \frac{1}{R_{e q}} = \frac{1}{R_{1}} + \frac{1}{R_{2}} + \frac{1}{R_{3}}$

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