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Q.

What are the factors that affect electric resistance ?


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a

Temperature

b

Length of the wire

c

Area of the cross-section of the wire

d

All of the above 

answer is D.

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Detailed Solution

Concept: Resistance is the property of the fabric that limits the stream of electrons. There are four components influencing resistance which are Temperature, Length of wire, Region of the cross-section of the wire, and nature of the material. The resistance of a wire depends both on the cross-sectional region and length of the wire and on the nature of the fabric of the wire.
Hence, the correct answer is option 4.
 
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