2024 · M/J · 5054/22 | Q7

0/45parts marked · 0 of 80 marks

Question (7 of 9)10 marks · Practise this topic →

Options

Theory: answer all nine questions. Show working and appropriate units; diagrams and alternative valid methods are marked against the original scheme.

(a)(i)Using the compass polarity shown in Fig. 7.1, mark N and S on the bar magnet.

Answer guidance

Using You must use the thing it names. An answer that reaches the right value another way may not score.

[1 mark]

(a)(ii)Describe how to use the Fig. 7.1 plotting compass on paper to trace the field line passing through P between the magnet’s poles.

Answer guidance

Describe Say what happens, in order. Reasons are not required unless the question also asks why.

[3 marks]

(a)(iii)Using the Fig. 7.1 compass, explain how to find the field direction at P.

Answer guidance

Using You must use the thing it names. An answer that reaches the right value another way may not score.

[1 mark]

(b)(i)Fig. 7.2 shows a magnet moved into and out of a coil connected to a centre-zero ammeter. Explain why moving the magnet produces a current.

Answer guidance

Explain Give reasons, not just what happens. Each distinct reason is usually worth a mark.

[2 marks]

(b)(ii)Describe the Fig. 7.2 magnet motion that produces alternating current of frequency 0.50 Hz.

Answer guidance

Describe Say what happens, in order. Reasons are not required unless the question also asks why.

[1 mark]

(b)(iii)How does the Fig. 7.2 centre-zero ammeter show the current is alternating rather than direct?

[1 mark]

(b)(iv)Why does increasing the frequency of the Fig. 7.2 alternating current also increase its magnitude?

[1 mark]

5054/22/M/J/24Cambridge O Level Physics 5054 · May/June 2024 · Paper 2 variant 2 · Question 7