The resistances of an iron wire and a copper wire at `20^(@)C`are `3.9(Omega)`and `4.1(Omega)`respectively. At what temperature will the resistances be equal?Temperature coefficient of resistivity for iron is `5.0xx10^(-3)K^(-1)`and for copper it is `4.0xx10^(-3)k^(-1).`Neglect any thermal expansion.

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.

At what temperature will the resistance of a copper wire become three times its value at 0^(@)C (Temperature coefficient of resistance for copper = 4 xx 10^(-3) per C)

The resistance of rwo wires A and B at 20^@C are 3 Omega and 4 Omega respectively. At what temperature will the resistance be equal ? alpha_(A) = 6 xx 10^-3 K^(-1), alpha_(B) = 2 xx 10^-3 K^-1 . Neglect any thermal expansion.

At what temperature will the resistannce of a copper wire become three times its value at 0^(@)C (Temperature coefficient of resistance for copper =4xx10^(-3)"per".^(@)C :-

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.

At what temperature(in kelvin) would the resistance of a copper wire be half its resistance at 0^@C ? Temperature coefficient of resistance of copper is 3.9 xx 10^(-3).^(@)C^(-1) .

The resistance of a copper wire and an iron at 20^@C are 4.1 Omega and 3.9Omega respectively. Neglecting any thermal expansion, find the temperature at which resistane of both are equal. alpha_(Cu)=4.0xx10^-3K^-1 an alpha_(Fe)=5.0xx10^-3K^-1

The resistance of a heating is 99Omega at room temperature. What is the temperature of the element if the resistance is found to be 11 Omega (Temperature coefficient of the material of the resistor is 1.7xx10^(-4)^(2).C^(-1) )

Resistance of two wires A and B at 10^@C are 3.8 Omega and 4.0 Omega respectively . If temperature coefficient of resistance for wire A and B are 4.8 xx10^(-3) K^(-1) and 3.8 xx10^(-3)K^(-1) respectively, calculate the temperature at which resistance of both the wires are equal. Ignore thermal expansion.