Two wires of resistance R1 and R2 at 0 C have temperature coefficient of resistance -1 and -2 respectively-These are joined in series-The effective temperature coefficient of resistance is-

Two resistors with temperature coefficients of resistance $α_{1}$ and $α_{2}$ have resistances $R_{1}$ and $R_{2}$ at $0^{\circ} C$ . What is the temperature coefficient of the compound resistor consisting of the two resistors connected in parallel?

Two resistance $R_{1}$ and $R_{2}$ are made of different materials. The temperature coefficient of the material of $R_{1}$ is $α$ and that of the material of $R_{2}$ is $β$ . The resistance of the series combination of $R_{2}$ and $R_{1}$ does not change with temperature, then the ratio of resistances of the two wires at $0^{o}$ will be:

Q. Two conductors have the same resistance at

0^{\circ} C

but their temperature coefficient of resistance are

α_{1}

and

α_{2}

. The respective temperature coefficient of their series and parallel combinations are nearly:

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Two wires of resistance R1 and R2 at 0 C have temperature coefficient of resistance α1 and α2 respectively.These are joined in series.The effective temperature coefficient of resistance is:-

Two wires of resistance $R_{1}$ and $R_{2}$ at 0 C have temperature coefficient of resistance $α_{1}$ and $α_{2}$ respectively.These are joined in series.The effective temperature coefficient of resistance is:-