A Nichrome wire has a radius of 0.3 mm and a resistivity of 1.5 × 10−6 Ω⋅m.If the wire carries a current of 0.7 A,what is the potential difference per unit length along this wire?
A) 0.3 V/m
B) 3.7 V/m
C) 1.1 V/m
D) 0.1 V/m
E) 36.6 V/m
Correct Answer:
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