DP Physics (first assessment 2025)

Question 20N.2.HL.TZ0.c(ii)

Date	November 2020	Marks available	[Maximum mark: 2]	Reference code	20N.2.HL.TZ0.c(ii)
Level	HL	Paper	2	Time zone	TZ0
Command term	Determine	Question number	c(ii)	Adapted from	N/A

c(ii).

[Maximum mark: 2]

20N.2.HL.TZ0.c(ii)

Determine the charge $Q$ of the sphere.

[2]

Markscheme

$8.99 \times 10^{9} \times Q \times (\frac{1}{5.0 \times 10^{- 2}} - \frac{1}{1.0 \times 10^{- 1}}) = 1.1 \times 10^{3}$ ✓

$Q = 1.2 \times 10^{- 8} « C »$ ✓

Examiners report

Even though many were able to choose the appropriate formula from the data booklet they were often hampered in their use of the formula by incorrect techniques when using fractions.

Syllabus sections

D. Fields » D.2 Electric and magnetic fields

Question 20N.2.HL.TZ0.c(ii)

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