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 conductor at 30^@C is 3.25 Omega and at 100^@C is 3.95Omega . Calculate the temperature coefficient of resistance of the conductor and the resistance of the conductor at 0^@C .

The resistance of a conductor at 15^(@)C is 16 Omega and at 100^(@)C is 20 Omega . What will be the temperature coefficient of resistance of the conductor ?

If the resistance of a conductor is 5 Omega at 50^(@)C and 7Omega at 100^(@)C then the mean temperature coefficient of resistance of the material is

The rsistance of a conductor at 20^(@)C is 3.15 Omega and at 100^(@)C is 3.75 Omega . Determine the temperature coefficient of resistance of the conductor. What will be the resistance of the conductor at 0^(@)C ?

The resistance of iron and copper wires at 20^@C are 4.1Omega and 4.3Omega respectively. At what temperature will the resistance be equal ? Temperature coefficient of resistance for iron is 5.0xx10^(-3)K^(-1) and for copper is 4.0xx10^(-3) K^(-1) . Neglect any thermal expansion.

A conductor has resistance of 5 Omega at 60^@C and 6 Omega at 100 ^@C . Find (i) the mean temperatures coefficient of resistance of the material of conductor and (ii) resistance at 0^@C .

The resistivity of a wire at 20^circ C and 100^circ C is 3 Omega-m and 4 Omega-m respectively. The resistivity of the wire at 0^circ C is

A standard coil marked 2 Omega is found to have a resistance of 2.118 Omega " at " 30^(@)C . Calculate the temperature at which the marking is correct. The temperature coefficient of the resistance of the material of the coil is 0.0042 .^(@)C^(-1) .

A standard coil marked 5 Omega is found to have a resistance of 5.128 Omega at 30^@C . Calculate the temperature at which the marking is correct. The temperature coefficient of resistance of the material of the coil is .0042^@C^(-1) .

The resistance of a platinum resistance thermometer is 3.14 Omega at 40^(@)C and 3.76 Omega at 100^(@)C . Calculate the temperature coefficient of resistance of platinum. What will be its resistance when the thermometer is immersed in melting ice ?