DP Physics (last assessment 2024)

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Question 22M.2.HL.TZ1.7b

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Date May 2022 Marks available [Maximum mark: 2] Reference code 22M.2.HL.TZ1.7b
Level HL Paper 2 Time zone TZ1
Command term Sketch Question number b Adapted from N/A
b.
[Maximum mark: 2]
22M.2.HL.TZ1.7b

Two identical positive point charges X and Y are placed 0.30 m apart on a horizontal line. O is the point midway between X and Y. The charge on X and the charge on Y is +4.0 µC.

(b)

Sketch, on the axes, the variation of the electric potential V with distance between X and Y.

[2]

Markscheme

symmetric curve around 0 with potential always positive, “bowl shape up” and curve not touching the horizontal axis. ✓

clear asymptotes at X and Y ✓

 

Examiners report

Very few candidates drew a graph that was awarded two marks. Many had a generally correct shape, but common errors were drawing the graph touching the x-axis at O and drawing a general parabola with no clear asymptotes.

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