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At the tempearture 0^(@) C the electri...

At the tempearture `0^(@) C` the electric resistance of conductor 2 is `eta` times that of conductor 1. Thier temperatures coeficients of resistance are equal to `alpha_(2)` and `alpha_(1)` respectively. Find the tempearture coefficient of resistance of a circuit segment consisting of these two conductors when they are connected
(a) In series , (b) In parallel .

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