a wire of length L and cross sectional area A has a resistance R. Rank the resis

Question

a wire of length L and cross sectional area A has a resistance R. Rank the resistance of the following systems from smallest to largest. (there may be ties) a) The wire described above is placed in parallel with an identical wire b) The wire described above is placed in series withan identical wire. c) The wire described above has cross-sectional area 2A. d) The wire described in C is placed in parallel with an identical wire. e) The wire described in C is placed in series with an identical wire.

Explanation / Answer

d c=a e b

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