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.

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 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 .

The two resistors when connected together show maximum value of resistance as 160 Omega , and minimum value of resistance as 40 Omega . Determine the value of both the resistors.

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 potentiometer wire has a length of 1.5 m and resistance of 10 Omega . It is connected in series with the cell of emf 4 Volt and internal resistance 5 Omega . Calculate thepotential drop per centimeter of the wire.

A potentiometer wire has a length of 4 m and resistance of 4 Omega . What resistance must be connected in series with the potentiometer wire and a cell of e.m.f. 2 V having internal resistance 2 Omega to get a potential drop of 10^-3V/(cm) along the wire?