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Question

A copper wire of cross-sectional area 2.0mm2, resistivity = 1.7×108Ωm, carries a current of 1 A. The electric field in the copper wire is:

A
8.5×105V/m
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B
8.5×104V/m
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C
8.5×103V/m
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D
8.5×102V/m
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