Two resistors with temperature coefficients of resistance `alpha_1` and `alpha_2` have resistances `R_(01)` and `R_(02) ` at `0^@C`. Find the temperature coefficient of the compound resistor consisting of the two resistors connected.
a.. In series and
b. in paralllel

The temperature coefficient of resistance of an alloy used for making resistor is

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Obtain a general relationship between temperature coefficient of resistance alpha_(1) and alpha_(2) at temperature T_(1) .^@C and T_(2) .^@C for a given conductor.