DP Physics (last assessment 2024)

Question 19N.2.SL.TZ0.b(ii)

Date	November 2019	Marks available	[Maximum mark: 2]	Reference code	19N.2.SL.TZ0.b(ii)
Level	SL	Paper	2	Time zone	TZ0
Command term	Calculate	Question number	b(ii)	Adapted from	N/A

b(ii).

[Maximum mark: 2]

19N.2.SL.TZ0.b(ii)

A proton is moving in a region of uniform magnetic field. The magnetic field is directed into the plane of the paper. The arrow shows the velocity of the proton at one instant and the dotted circle gives the path followed by the proton.

The speed of the proton is 2.0 × 10⁶ m s^–1 and the magnetic field strength B is 0.35 T.

Calculate the time for one complete revolution.

[2]

Markscheme

$T = \frac{2 π R}{v}$ ✔

$T = « \frac{2 π \times 0.06}{2.0 \times 10^{6}} = 1.9 \times 10^{- 7}$ « s » ✔

NOTE: Award [2] for bald correct answer

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Core

Core » Topic 6: Circular motion and gravitation » 6.1 – Circular motion

Core » Topic 6: Circular motion and gravitation

Question 19N.2.SL.TZ0.b(ii)

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