How does (a) resistance, and (b) specific resistance of a wire depend on its (i) length, and (ii) radius?

Specific resistance of a wire depends on its

Specific resistance of a wire depends on its

The resistance of a conductor depends on its

How is the resistance of a wire affected if its (a) length is doubled, (b) radius is doubled ?

How does the resistance of a wire depend on its length ? Give a reason for your answer.

How does the resistance of a wire depend on its radius? Explain your answer.

How does the (i) thickness and (ii) length of a fuse wire depend on its current rating?

(a) Name two factors on which the specific resistance of a wire depends ? (b) Two wires A and B are made of copper. The wire A is long and thin, while the wire B is short and thick. Which will have more specific resistance ?

(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 ?

How does an increase in the temperature affect the specific resistance of a : Metal and