Question

two wires of same dimensions but differer
esistivity p, and p, are connected in series. The
equivalent resistivity of the combination is
(1) PAT P2
(2) SPIP2
(3) P, + P2
(4) (e, + p)2​

Answer 1

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Req = p1L/A + P2L/A

= L/A (p1+p2)