Answer a. The magnitude increases because the rod speeds up. b. The magnitude os

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a. The magnitude increases because the rod speeds up. b. The magnitude oscillates because the current switches direction. c. The magnitude decreases because resistance always decreases current over time. d. The magnitude decreases because the rod slows down. e. The magnitude remains constant because the rod travels with constant speed. The figure shows a conducting rod sliding over two bare wires. The wires are in a horizontal plane (ignore gravity) and are connected through the resistor R. A uniform magnetic field points out of the page everywhere. Friction between the rod and the wires is negligible. At the instant shown, the rod is moving from right to left, toward R, with a speed v. (A hand got the rod startedbefore the instant shown, but is no longer in contact with it.) Which of the following best describes the magnitude of the current in R subsequent to the instant shown?

Explanation / Answer

d.

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