On what factors does the resistance of a conductor depend ?

The resistance of a conductor depends on its

Answer the following: (i) Define the term drift velocity . (ii) On the basis of electron drift , derive an expression for resistivity of a conductor in terms of number density of free electrons and relaxation time. On what factors does resistivity of a coductor depend ? (iii) Why alloys like constantan and manganin are used for making standard restores ?

(a) Draw magnetic field lines of a bar magnet. "Two magnetic field lines never intersect each other." Why ? (b) An electric oven of 1.5 kW is operated in a dometic circuit (220V) that has a current rating of 5A. What result do you expect in this case ? Explain . or Which is meant by resistance of a conductor ? Name and define its SI units. List the factors on which the resistance of a conductor depends. How is the resistance of a wire affected if - (i) its length is doubled , (ii) its radius is doubled ?

On what factors does the elasticity of a material depend ?

(a) List the factors on which the resistance of a conductor in the shape of the wire depend. (b) Why are metals good conductors of electricity whereas glass is a bad conductor of electricity ? Give reason . (c ) Why are alloys commonly used in eletrical heating devices ? Give reason.

The electrical resistance of a conductor depends upon

On what factors does the period of a simple pendulum depend ?

State the factors affecting the resistance of a conductor.

Internal resistance of a cell depends on

State three factors on which the resistance of a wire depends. Explain how does the resistance depend on the factors stated by you.