A wire is 1 m long and 1 *10-6 m2 in cross-sectional area.When connected to a potential difference of 2 V, a current of 4 A exists in the wire.The resistivity of this wire is:
A) 2 * 10-6 .m
B) 8* 10-6 . m
C) 1 * 10-7 .m
D) 4 *10-7 .m
E) 5 * 10-7 m
Correct Answer:
Verified
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B)ampere
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