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Q.

The resistance of a conductor depends on


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a

Temperature of conductor

b

Material of conductor

c

Area of cross section of conductor

d

All of the above 

answer is D.

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Detailed Solution

The correct option is 4.
“The resistance of a conductor is described as the ratio of potential difference and current. Resistance is a condition which resists the flow of current in a conductor.” The resistance (R) of a conductor can be given by the relation
R= ρ lA
where, l is length of wire, A is area of cross section of wire and ρ is resistivity.
So, resistance depends upon the length and area of the cross section of the conductor. It also depends upon the temperature and material of the conductor.
 
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