Question

Name three factors on which resistance of a given wire depends and state how it is affected by the factors stated by you.​

Answer 1

(i) Resistance of a wire is directly proportional to the length of the wire means with the increase in length resistance also increases. R ∝ I ...........

(ii) Resistance of a wire is inversely proportional to the area of cross-section of the wire. If area of cross-section of the wire is more, then resistance will be less and vice versa. R ∝ 1..........

(iii) Resistance increases with the increase in temperature .......

(iv) Resistance depends on the nature of conductor because different substances have different concentration of free electrons........

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Answer 2

Answer:

1) Nature of it's material

2)On length 

3)Area of cross-section

Explanation:

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