The resistances of a wire at temperatures `t^(@)C` and `0^(@)C` are releated by

The resistance R_(o) and R_(t) of a metallic wire at temperature 0^(@)C and t^(@)C are related as ( alpha is the temperature co-efficient of resistance).

The resistance of a wire at room temperature 30^(@)C is found to be 10 Omega . Now to increase the resistance by 10% , the temperature of the wire must be [ The temperature coefficient of resistance of the material of the wire is 0.002 per .^(@)C ]

Resistance of a wire at temperature t^(@)C is R=R_(0)(1+at+bt^(2)) Here, R_(0) is the temperature at 0^(@)C . Find the temperature coefficient of resistance at temperature t is

The resistance of a wire at 0^(@) C and 100^(@) C is 5.2Omega and 7.85Omega , respectively. Calcualte the mean temperature coefficient of resistance of the material of the wire.

The resistance of a wire is 5 ohm at 50^@C and 6 ohm at 100^@C. The resistance of the wire at 0^@C