Explain why bending a wire does not affect electrical resistance.

Explain the following: NaCl is not a conductor of electricity in solid state whereas it does conduct electricity in aqueous solution as well as in molten state.

Why Manganin is used to make standard resistance coil ? How does the electric resistance of metal varies with the rise in its temperature ?

Explain,why metals are good conductors of heat and electricity?

Explain why Al wire is used to make transmission cables.

Masses of three wires of a metal are in the ratio 1:2:3 and their lengths in the ratio 3:2:1. Electrical resistance of these wires will be in the ratio of

Explain why A spinning cricket ball in air does not follow a parabolic trajectory

Explain the following statement- In making electric wires, a mixture of copper and nickle is used.

Solid sodium chloride does not conduct electric current why?

A wire has a resistance of 16 ohm it is melted and drawn into a wire of half its length calculate the resistance of new wire what is the percentage change in its resistance