Question

Derive the formula for equivalent resistance when three resistances
are connected in parallel.​

Answer 1

Answer:

Add their values (R = R1 + R2 + …) and represent them by a single resistance. Look at the parallel banches between the nodes and find their equivalent (by adding the reciprocals (1/R = 1/R1 + 1/R2 + ….). In a complex network you might be left with a few effective resistances in series - if so add them.

Answer 2

Explanation:

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