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.
+15 mV
b.
?15 mV
c.
+20 mV
d.
?20 mV
e.
+10 mV
a
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