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Two wires of equal lengths one of copper...

Two wires of equal lengths one of copper and other of manganin have the same resistance which wire is thicker ?

A

copper

B

manganin

C

both have equal thickness

D

none of the above

Text Solution

Verified by Experts

The correct Answer is:
B
manganin
`R_(Mn) gt R_(Cu)`
Length of both the wires are equal. If we want resistance equal, so have to reduce the resistance of manganin wire, we have to take manganin wire thicker.
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