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Q.

Two wires A and B are equal of lengths, different cross-sectional areas and made of the same metal. Name the property which is same for both wires.


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a

Resistivity

b

Resistance

c

Current

d

Voltage 

answer is A.

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Detailed Solution

Resistivity is the property which is similar for both wires.
Suppose two wires, A and B are equal in length, have different cross-sectional areas and are made of the same metal. Then the resistivity is the property which is the same for both wires. It is because resistivity is a property of the material which depends on the temperature and nature of the material. Therefore, since both wires are made of the same metal, they have the same resistivity.
 
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Two wires A and B are equal of lengths, different cross-sectional areas and made of the same metal. Name the property which is same for both wires.