Question

Two metalitic wire of the same material are connected in parallel wire A has length ''T" and radius r, wire B has a length 21 and radius 2r , calculate the ratio of their equivalent resistance in parallel combination and the resistance of wire A?
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Answer 1

Answer:

↪since here we know that,

↪R = rho * l/A

↪now here , the Resistance for Wire A = rho * l/A

↪and the equivalent resistance after solving we get as

↪Req = rho * l/3A

↪Now finding ratio , we get as

〽RA / Req = 3:1