Question

There are two metallic wire
of the same thickness made from iron and silver. If the length of iron wire is 12cm what should be the length of
silver wire which is equal to the resistance of iron wire?
Data :- Resistivity of iron = 10 X 10 ^-8ohm m
Resistivity of silver = 16 X 10^ -8 ohm m​

Answer 1

Answer:7.5cm

Explanation: refer the attachment below

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