Theory: answer all nine questions. Show working and appropriate units; diagrams and alternative valid methods are marked against the original scheme.
(a)(i)Fig. 5.1 shows an initially uncharged rubber balloon rubbed with wool; the balloon becomes negatively charged. Complete the diagram labels for what the balloon gains and what the wool loses/becomes.
Answer guidance
Complete Fill in every gap. A partly completed answer usually scores partly.
[2 marks]
(a)(ii)Explain why the rubbed Fig. 5.1 balloon remains negatively charged for a long time.
Answer guidance
Explain Give reasons, not just what happens. Each distinct reason is usually worth a mark.
[2 marks]
(b)Rubbing the Fig. 5.1 balloon warms its enclosed air. Explain, using air particles, why balloon volume increases as temperature rises.
Answer guidance
Explain Give reasons, not just what happens. Each distinct reason is usually worth a mark.
[3 marks]
5054/22/M/J/24Cambridge O Level Physics 5054 · May/June 2024 · Paper 2 variant 2 · Question 5