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Question 30

From Physics HL Paper 1A (May 2025, TZ2)

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  1. A magnet attached to a spring oscillates above a coil as shown. The period of the oscillation is T.
Diagram showing a magnet attached to a spring oscillating above a coil, with an ammeter and resistor connected to the coil.
Diagram showing a magnet attached to a spring oscillating above a coil, with an ammeter and resistor connected to the coil.
A sinusoidal graph showing the variation of current I with time t, indicating peak current I0 and period T.
A sinusoidal graph showing the variation of current I with time t, indicating peak current I0 and period T.

The amplitude of the magnet's oscillation is now decreased.

What is the new variation of I with t?

Four graphs (A, B, C, D) showing current (I) versus time (t) with varying amplitudes and periods.
Four graphs (A, B, C, D) showing current (I) versus time (t) with varying amplitudes and periods.

Textbook topics in this question

Review the exact course sections assessed by each question part.

Mixed-topic question