Question

Two wires of equal diameters, resistivities p1 and P2 and lengths x1 and x2 respectively are joined in series. The equivalent resistivity of the combination is​

Answer 1

Answer:

Equal diameter means equal area 

In series 

Rnet=R1+R1Apnet(l1+l2)=Ap1+l1+Ap2l2pnet=l1+l2p1l1+p2l2

Explanation:

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