DP Physics (first assessment 2025)

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Question 23M.2.HL.TZ1.7a

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Date May 2023 Marks available [Maximum mark: 2] Reference code 23M.2.HL.TZ1.7a
Level HL Paper 2 Time zone TZ1
Command term Explain Question number a Adapted from N/A
a.
[Maximum mark: 2]
23M.2.HL.TZ1.7a
(a)

Explain, by reference to Faraday’s law of electromagnetic induction, why there is an electromotive force (emf) induced in the loop as it leaves the region of magnetic field.

[2]

Markscheme

The induced emf is equal/proportional/related to the «rate of» change of «magnetic» flux/flux linkage ✓

Flux is changing because the area pierced/enclosed by magnetic field lines changes «decreases»

OR

Flux is changing because the loop is leaving/moving out of the «magnetic» field. ✓

Need to see a connection between the EMF and change in flux for MP1.

Need to see a connection between the area changing or leaving the field and the change in flux for MP2

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