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1. Why is the equivalent resistance in a parallel circuit equal to the sum of the reciprocals of the individual resistances, whereas in a series circuit, the equivalent resistance is the sum of the individual resistances? ​

Answer :

keijosalonen

Answer: Kirchhoff first law: sum of currents coming in branch and leaving it are same.

Explanation: in parallel circuit current is divided between resistors.

In series circuit same current passes through all resistors.

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