A piece of platinum wire has resistance of `2.5 Omega 0^@C`. If its temperature coefficient of resistance is `4 xx 10^-3//^@C`. Find the resistance of the wire at `80^@C`.

A wire has a resistance of 6 Omega at 30^@C and 6.5 Omega at 100^@C . Determine the temperature co-efficient of resistance of the wire. What will be resistance of a wire at 0∘C?

The resistance of a solution is 5 xx 10^3 ohm. Find the conductance of the solution.

A silver wire has a resistance of 4.2 Omega at 27^@C and resistance 5.4 Omega at 100^@C . Determine the temperature coefficient of resistance.

The resistance of a tungsten wire is 1000 Omega at 0^@C and 1045 Omega at 10^@C . Calculate the temperature coefficient of resistance of tungsten.

The resistance of a copper wire is 20 Omega at 0^@C . Find the resistance at 60^@C if the temperature coefficient of resistance of material is 0.004//^@C .

A wire has radius 0.5 mm and length 62.8 m. If the resistivity of the material of the wire is 5 times 10^(-7) Omega -m , find the resistance of the wire.

Choose correct alternative. When two resistances are connected in parallel then the equivalent resistance is 6//5 Omega . When one of the resistances is removed then the effective resistance is 2 Omega . The resistance of the wire removed will be A. 3 Ω B. 2 Ω C. 3 / 5 Ω D. 6 / 5 Ω

A wire has length 10 m and resistance 20 Omega If the resistivity of the material of the wire is 6 times 10^(-7) Omega.m , find the area of cross section of the wire.