DP Physics (last assessment 2024)

Question 21N.2.HL.TZ0.5d.ii

Date	November 2021	Marks available	[Maximum mark: 2]	Reference code	21N.2.HL.TZ0.5d.ii
Level	HL	Paper	2	Time zone	TZ0
Command term	Estimate	Question number	d.ii	Adapted from	N/A

d.ii.

[Maximum mark: 2]

21N.2.HL.TZ0.5d.ii

A square loop of side 5.0 cm enters a region of uniform magnetic field at t = 0. The loop exits the region of magnetic field at t = 3.5 s. The magnetic field strength is 0.94 T and is directed into the plane of the paper. The magnetic field extends over a length 65 cm. The speed of the loop is constant.

(d.ii)

The mass of the wire is 18 g. The specific heat capacity of copper is 385 J kg⁻¹ K⁻¹. Estimate the increase in temperature of the wire.

[2]

Markscheme

$∆ T = \frac{0.13}{0.018 \times 385}$ ✓

$∆ T = 1.9 \times 10^{- 2}$ «K» ✓

Allow [2] marks for a bald correct answer.

Award [1] for a POT error in MP1.

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Core » Topic 3: Thermal physics » 3.1 – Thermal concepts

Core » Topic 3: Thermal physics

Question 21N.2.HL.TZ0.5d.ii

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