Two cables can be used to wire a circuit

PHYSICS · Single correct · CBSE · Physics · Electricity · Electricity

Problem

89. Two cables can be used to wire a circuit. Cable AA has a lower resistivity, a larger diameter, and a different length than cable BB. Which cable should be used to minimize heat loss if the same current is maintained in either cable? (A) Cable AA (B) Cable BB (C) The heat loss is the same for both. (D) It cannot be determined without knowing the length of each cable.

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