Question

Two wires A and B are made of copper. Both wires are 1m long but wire A is 1mm thick and wire B is 2 mm thick. The resistivity is
a. more for A
b. more for B
e same for both A and B
d. cannot be compared​

Answer 1

C) Same For Both A and B.

• The resistivity of a material is a measurement of a material's ability to resist the flow of an electric current.

• Resistivity only depends on the nature and temperature of the wire.

• As resistivity is an intrinsic property of the wire, it means that it doesn't depend on the dimensions of the wire.
• Hence resistivity does not change with the change in the thickness of the wire.

Therefore, resistivity will be the same for wires A and B.

Answer 2

The correct answer is option (c) same for both A and B.

• The resistivity of a material is a measurement of a material's ability to resist the flow of an electric current.
• Resistivity only depends on the nature and temperature of the wire.
• As resistivity is an intrinsic property of the wire, it means that it doesn't depend on the dimensions of the wire.
• Hence resistivity does not change with the change in the thickness of the wire.

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