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Equivalent Resistance of a System of Resistor

What is equiv...

Question

What is equivalent resistance? Derive an expression for it.

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Solution

Equivalent resistance is the cumulative resistance of the complete circuit.
Equivalent resistance for a series resistance circuit is given by $R e = R_{1} + R_{2} + R_{3}$
Whereas for resistance in parallel it is $\frac{1}{R e} = \frac{1}{R_{1}} + \frac{1}{R_{2}} + \frac{1}{R_{3}}$

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Equivalent Resistance of a System of Resistor

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