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Calculate the electric field in a copper wire of cross-sectional area`2.0mm^(2)` carrying a current of 1A .The resistivity of copper `=1.7xx10^(-8)(Omega)m`.

A

E=8.5mV/m

B

E=2.5mV/m.

C

E=3.5mV/m.

D

E=5.5mV/m.

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The correct Answer is:
A
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