Two resistors R1 and R2 are in series.Their coefficients are alpha1 and alpha2 .Find the effective value of alpha ?

Two wires of resistance R_(1) and R_(2) have temperature coeficient of resistance alpha_(1) and alpha_(2) respectively. These are joined in series. The effeictive temperature coefficient of resistance is

Two conductors have the same resistance at 0^@C but their temperature coefficient of resistanc are alpha_1 and alpha_2 . The respective temperature coefficients of their series and parallel combinations are nearly

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

Two resistances R_1 and R_2 are made of different materials. The temperature coefficient of the material of R_1 is alpha and of the material of R_2 is -beta . The resistance of the series combination of R_1 and R_2 will not change with temperature, if R_1//R_2 equals.

A resistance R of therimal coefficient of resistivity alpha is connected in parallel with a resistance 3R. Having thermal coeffiecinet of resistivity 2alpha Find the value of alpha_(eff)

Two resistance R_(1) and R_(2) are made of different material. The temperature coefficient of the material of R_(1) is alpha and of the material of R_(2) is -beta . Then resistance of the series combination of R_(1) and R_(2) will not change with temperature, if R_(1)//R_(2) will not changee with temperature if R_(1)//R_(2) equals

There are two rods of length l_1 l_2 and coefficient of linear expansions are alpha_1 and alpha_2 respectively. Find equivalent coefficient of thermal expansion for their combination in series.