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Question 33

From Physics HL Paper 1 (May 2024, TZ2)

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  1. A square loop of wire of width w is pulled at a constant velocity v through a magnetic field of width 2w.
Diagram illustrating a square loop of wire of width 'w' being pulled at a constant velocity 'v' through a magnetic field of width '2w'. The magnetic field is represented by 'x' symbols, indicating it's directed into the page. The loop is shown entering the field, with a dashed outline indicating its position after moving further.
Diagram illustrating a square loop of wire of width 'w' being pulled at a constant velocity 'v' through a magnetic field of width '2w'. The magnetic field is represented by 'x' symbols, indicating it's directed into the page. The loop is shown entering the field, with a dashed outline indicating its position after moving further.

Which of the following shows the variation of current I in the loop with time t?

Four graphs (A, B, C, D) showing the variation of current (I) with time (t). Each graph displays different patterns of current flow, including square waves and a trapezoidal wave, some with positive and negative current values. These graphs represent possible outcomes for the current induced in the wire loop as it moves through the magnetic field.
Four graphs (A, B, C, D) showing the variation of current (I) with time (t). Each graph displays different patterns of current flow, including square waves and a trapezoidal wave, some with positive and negative current values. These graphs represent possible outcomes for the current induced in the wire loop as it moves through the magnetic field.

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