A Nichrome Wire Has a Radius of 0

question 48

Multiple Choice

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

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