Question: Suppose that the current were to flow in the direction opposite to that found in Problem 1. (a) In what direction would the magnetic force

Suppose that the current were to flow in the direction opposite to that found in Problem 1.
(a) In what direction would the magnetic force on the rod be?
(b) In the absence of an external force, what would happen to the rod's kinetic energy?
(c) Why is this not possible? Returning to the correct direction of the current, sketch a rough graph of the kinetic energy of the rod as a function of time.

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