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Q.

A copper wire of cross-sectional area 2.0 mm2 , resistivity =1.7×10−8Ωm, carries a current of 1 A. The electric field in the copper wire is

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a

8.5×10−5V/m

b

8.5×10−4V/m

c

8.5×10−3V/m

d

8.5×10−2V/m

answer is C.

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