DP Physics (last assessment 2024)

Question 18M.3.SL.TZ1.c

Date	May 2018	Marks available	[Maximum mark: 2]	Reference code	18M.3.SL.TZ1.c
Level	SL	Paper	3	Time zone	TZ1
Command term	Sketch	Question number	c	Adapted from	N/A

[Maximum mark: 2]

18M.3.SL.TZ1.c

A magnetized needle is oscillating on a string about a vertical axis in a horizontal magneticfield B. The time for 10 oscillations is recorded for different values of B.

M18/4/PHYSI/SP3/ENG/TZ1/01_01

The graph shows the variation with B of the time for 10 oscillations together with the uncertainties in the time measurements. The uncertainty in B is negligible.

The student plots a graph to show how P² varies with $\frac{1}{B}$ for the data.

Sketch the shape of the expected line of best fit on the axes below assuming that the relationship $P = \frac{K}{{\sqrt B }}$ is verified. You do not have to put numbers on the axes.

[2]

Markscheme

straight AND ascending line

through origin

[2 marks]

Syllabus sections

Core

Core » Topic 1: Measurements and uncertainties » 1.2 – Uncertainties and errors

Core » Topic 1: Measurements and uncertainties

Question 18M.3.SL.TZ1.c

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