Theory: answer all nine questions. Show working and appropriate units; diagrams and alternative valid methods are marked against the original scheme.
(a)(i)Fig. 3.1 shows a solar charger charging a phone. Complete the two energy-store labels in Fig. 3.2: the Sun and the battery.
Answer guidance
Complete Fill in every gap. A partly completed answer usually scores partly.
[2 marks]
(a)(ii)Why does the Fig. 3.1 solar charger take longer to charge the phone battery on a cloudy day?
[1 mark]
(b)The phone in Fig. 3.1 is warm after use and cools when switched off. Name and describe the three processes transferring energy from its outside surface.
Answer guidance
State A short answer. No explanation is needed, and adding one cannot earn extra marks.
[3 marks]
(c)The Fig. 3.1 phone battery charges for 4.5 hours at average current 300 mA. Calculate the charge entering the battery, including its unit.
Answer guidance
Calculate Show your working. The method can earn marks even when the final value is wrong, and a bare answer often cannot.
[3 marks]
5054/22/M/J/24Cambridge O Level Physics 5054 · May/June 2024 · Paper 2 variant 2 · Question 3