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Physics HL Paper 1A (May 2025, TZ2)

A circuit is created with a cell, two parallel conducting wires and a moveable metal rod of length L. When a uniform magnetic field B is directed out of the page through the circuit, the metal rod moves to the right with velocity v. The initial current in the circuit is I. What is the direction of the current through the circuit and the initial force on the metal rod?

Figure region page 17
Figure region from page 17