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A 20-cm length of wire is held along an east-
west direction and moved horizontally to the
north with a speed of 3.0 m/s in a region
where the magnetic field of the earth is 60 µiT
directed 30° below the horizontal. What is the
magnitude of the potential difference
between the ends of the wire? O a 31 VO b. 36
uV 21 AV d. 18 V 24 uV

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