DP Physics (first assessment 2025)

Question EXE.2.SL.TZ0.a

Date	Example questions Example questions	Marks available	[Maximum mark: 4]	Reference code	EXE.2.SL.TZ0.a
Level	SL	Paper	2	Time zone	TZ0
Command term	Determine	Question number	a	Adapted from	N/A

[Maximum mark: 4]

EXE.2.SL.TZ0.a

Determine the magnetic force acting on the 15 Ω wire due to the current in the 30 Ω wire.

[4]

Markscheme

Use of combination of resistors OR $V = I R$ ✓

To show that current in 30 Ω wire is 5.0 A ✓

$\frac{F}{I} = \frac{2 \times 10^{- 7} I_{15} I_{30}}{r} = \frac{2 \times 10^{- 7} \times 10 \times 5}{0.20}$ ✓

$(F = 5 \times 10^{- 5} \times 0.25 =) 1.3 \times 10^{- 5}$ N ✓

Syllabus sections