jaipreet singh asked: “can you please tell me the DERIVATION OF CELLS IN SERIES AND PARALLEL?” Answer: I am posting here the simplified treatment to calculate the current in a circuit with combination of cells. In this derivation it is assumed that all cells have the same EMF and same internal resistance. CELLS IN SERIES […]

# Tag: parallel combination

QUESTION: Two metallic wires A and B of the same material are connected in parallel. Wire A has length l and radius r, wire B has a length 2l and radius 2r. Calculate the ratio of the equivalent resistance in parallel combination and the resistance of wire A. ANSWER: