DP Physics (last assessment 2024)

Question 21N.2.HL.TZ0.5c.i

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

c.i.

[Maximum mark: 2]

21N.2.HL.TZ0.5c.i

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.

(c.i)

There are 85 turns of wire in the loop. Calculate the maximum induced emf in the loop.

[2]

Markscheme

ALTERNATIVE 1

maximum flux at « $5.0 \times 5.0 \times 10^{- 4} \times 85 \times 0.94$ » $= 0.19975 \approx 0.20$ «Wb» ✓