Assertion: Material used in the construction of a standard resistance is constantan or manganin.
Reason: Temperatures coefficient of constan is very small.

(A): Material used in the construction of a standard resistance is constantan or manganin. (R): Temperature coefficient of Resistance constantan is very small.

Statement I : Material used in the construction of a standard resistance is constantan or manganin. Statement II : Its temperature coefficient of resistance is very small.

Assertion: meterbridge wire is made up of manganin Reason: The temperature coefficient of resistance is very small for manganin

Assertion: meterbridge wire is made up of manganin Reason: The temperature coefficient of resistance is very small for manganin

Assertion: meterbridge wire is made up of manganin Reason: The temperature coefficient of resistance is very small for manganin

Define the temperature coefficient of resistance of material.