A negligibly small current is passed through a wire of length 15m and of uniform cross-section `6.0xx10^-7m^2` and its resistance is measured to be `5.0Omega.` What is the resistivity of the material at the temperature of the experiment ?

A 1 m long metal wire has a cross sectional area of 0.1mm^2 . Find out the resistance of the wire if the resistivity of the metal is 1.8 times 10^-6 Omega.cm.

When 5V potential difference is applied across a wire of length 0.1 m, the drift speed of electron a 2.5 times 10^-4m//s IF the electron density in the wire is 8 times 10^28 m^-3 , the resistivity of the material of wire.

When 5V potential difference is applied across a wire of length 0.1 m, the drift speed of electron a 2.5 times 10^-4 m.s^-1 . IF the electron density in the wire is 8 times 10^28 m^-3 , the resistivity of the material is close to

The resistance of a uniform metallic wire is 1 Omega ,its radius is 0.1 mm and resistivity of its material is 1.8 times 10^-6 Omega .cm. Determine the length of the wire.

An electric toaster uses nichrome for its heating element. When a negligibly small current passes through it, its resistance at room temperature (27.0^@C is found to be 75.3Omega When the toaster is connected to a 230V supply, the current settles, after.a few seconds, to a steady value of 2.68A. What is the steady temperature of the nichrome element ? The temperature coefficient of resistance averaged over the temperature range involved, is 1.70xx10^(-4)//C^@

An electric cell is sending electric currents through a resistance of 10 Omega . IF a shunt of 1 Omega is connected with that resistance then the current through the 10 Omega resistance becomes half of the previous value.What is the resistance of the cell?IF the current through the shunt be 0.9A, then what will be the emf of the cell?