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Question 19M.2.HL.TZ2.5ai

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.2.HL.TZ2.5ai
Level HL Paper 2 Time zone TZ2
Command term Label Question number ai Adapted from N/A
ai.
[Maximum mark: 1]
19M.2.HL.TZ2.5ai

A proton moves along a circular path in a region of a uniform magnetic field. The magnetic field is directed into the plane of the page.

(ai)

Label with arrows on the diagram the magnetic force F on the proton.

[1]

Markscheme

F towards centre ✔

Examiners report

Examiners were requested to be lenient here and as a result most candidates scored both marks. Had we insisted on e.g. straight lines drawn with a ruler or a force arrow passing exactly through the centre of the circle very few marks would have been scored. For those who didn’t know which way the arrows were supposed to be the common guesses were to the left and up the page. Some candidates neglected to label the arrows.

Syllabus sections