Two metallic wires. A and B of equal dimensions but made of different materials, having resistivities p and 2p temperature coefficients of resistivities 2aipha and alpha, are connected in series. The temperature coefficient of resistance of the composite wire equals

Two metallic wires. A and B of equal dimensions but made of different

1.	Two metallic wires. A and B of equal dimensions but made of different materials, having resistivities p and 2p temperature coefficients of resistivities 2aipha and alpha, are connected in series. The temperature coefficient of resistance of the composite wire equals
Answer» `rho_(eq)=(3)/(2)rho` `alpha_(eq)=(3)/(2)ALPHA` `rho_(eq)=3rho` `alpha_(eq)=(4)/(3)alpha` Answer :A::D

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Two metallic wires. A and B of equal dimensions but made of different materials, having resistivities p and 2p temperature coefficients of resistivities 2aipha and alpha, are connected in series. The temperature coefficient of resistance of the composite wire equals

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