30. A very long straight wire carries a large steady current \( i \). Rectangular metal loops, in the same plane as the wire, move with velocity \( \mathbf{v} \) in the directions shown. Which loop will have an induced current? (a) only I and II (b) only I and III (c) only II and III (d) all of the above. (e) none of the above.
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In this case, the magnetic field is created by the current in the long straight wire. The magnetic field lines are circular and centered on the wire. Now, let's consider each loop: Show moreā¦
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