Question

State three factors on which the resistance of a

wire depends

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Answer 1

Answer:

The resistance of a wire depends upon the following factors:

(i) Length:- resistance of wire is directly proportional to its length. R directly proportional to L.

(ii) Area of cross section:- resistance R of a wire is inversely proportional to the area of cross section.

(iii) Temperature:- with increase temperature, the resistance of wire increases as collision within the wire increase and slow the flow of current.

Answer 2

Answer:

1.the length of the wire

2.the cross-sectional area of the wire

3. the resistivity of the material composing the wire.