Resistance is R at temperature `t_(1)` .At what temperature the resistance will become nR (`alpha` is coefficient of temperature resistance).

The resistance of a heating is 99Omega at room temperature. What is the temperature of the element if the resistance is found to be 116 Omega (Temperature coefficient of the material of the resistor is 1.7xx10^(-4)^(2).C^(-1) )

Resistance of a resistor at temperature t^@C is R_t =R_0 (1+alphat + betat^2) , where R_0 is the resistance at 0^@C . The temperature coefficient of resistance at temperature t^@C is

At room temperature (27.0^@C) the resistance of a heating element is 100 Omega . What is the temperature of the element if the resistance is found to be 117 Omega , given that the temperature coefficient of the material of the resistor is (1.70 xx 10^(-4))^@C^(-1) .

Copper and carbon wires are connected in series and the combined resistor is kept at 0^(@)C . Assuming the combined resistance does not vary with temperature the ratio of the resistances of carbon and copper wires at 0^(@)C is (Temperature coefficient of resistivity of copper and carbon respectively are 4xx(10^(-3))/( ^(@)C) and -0.5xx(10^(-3))/( ^(@)C)

Resistance increases with increases in temperature for

The resistance of a metallic conductor increases with temperature due to.

Name a substance whose resistance decreases with the increase in temperature.

A resistance R carries a current i. The power lost to the surrounding is lambda (theta - theta_(0)) . Here, lambda is a constant, theta is temperature of the resistance and theta_(0) is the temperature of the atmosphere. If the corfficient of linear expansion is alpha . The strain in the resistance is

A resistance thermometer measures temperature with the increase in resistance of a wire of high temperature. If the wire is platinum and has resistance of 10Omega at 20^@C and a resistance of 35Omega in a hot furnace, what is the temperature of the hot furnace? (alpha_("platinum") = 0.0036^@C^(-1))

Consider the MB shown in the diagram, let the resistance X have temperature coefficient alpha_(1) and the resistance from the RB have the temperature coefficient alpha_(2) . Let the reading of the meter scale be 10 cm from the LHS. if the temperature of the two resistance increase by small temperature DeltaT then what is the shift in the position of the null point ? Neglect all the other changes in the bridge due to temperature rise.