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A wire 50 cm long and 1 mm^(2) in cross-...

A wire 50 cm long and 1 `mm^(2)` in cross-section carries a current of 4 A when connected to a 2 V battery. The resistivity of the wire is

A

`4 xx 10^(-6 ) Omega - m`

B

`1 xx 10^(-6 ) Omega - m`

C

`2 xx 10^(-7 ) Omega - m`

D

`5 xx 10^(-7 ) Omega - m`

Text Solution

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The correct Answer is:
B
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