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A Conducting Bar Moves as Shown near a Long Wire

Question 17

Multiple Choice

A conducting bar moves as shown near a long wire carrying a constant 50-A current. If a = 4.0 mm, L = 50 cm, and v = 12 m/s, what is the potential difference, VA − VB? A conducting bar moves as shown near a long wire carrying a constant 50-A current. If a = 4.0 mm, L = 50 cm, and v = 12 m/s, what is the potential difference, V<sub>A</sub> − V<sub>B</sub>? A) +15 mV B) −15 mV C) +20 mV D) −20 mV E) +10 mV


A) +15 mV
B) −15 mV
C) +20 mV
D) −20 mV
E) +10 mV

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