AO / Question Answers Extra information Marks Spec ref. 01 alternating Any order for second and 1 AO1 third answers live 1 P2.3.1 neutral 1 neutral 1 live 1 02.1 higher potential difference 1 AO1 a lower current 1 P2.4.3 This reduces the rate of energy 1 transfer from the cables. 02.2 For: gives access to mains electricity Accept any sensible 1 AO3 answers. Against: unsightly OR danger of 1 WS 1.4 children climbing 03.1 3.5 × 4 Accept 14 (V) with no 1 AO2 working shown for 2 14 (V) 1 P2 marks. 03.2 50 = current × 14 Accept 3.57 (A) with no 1 AO2 working shown for 3 1 P2.4.1 marks. 3.57 (A) Accept 3.6. 1 03.3 energy transferred = × time Accept 1 AO1 E = P t P2.4.2 03.4 50 × 600 Accept 30 000 with no 1 AO1×1 working shown for 2 30 000 1 AO2×2 marks. J 1 P2.4.2 50 × 10 = 500 1 mark. Do not accept j for the unit. 03.5 systematic error 1 AO3 WS 3.7 04.1 energy transferred = charge flow × p.d. Accept 1 AO1 E = Q V P2.4.2 04.2 216 = charge flow × 12 Accept 18 with no working 1 2×AO2 shown for 3 marks. 1 P2.4.2 Accept C for coulombs. 18 coulombs 1 1
Question Answers Extra information Marks AO / Spec ref. 01 alternating live neutral neutral live Any order for second and third answers 1 1 1 1 1 AO1 P2.3.1 02.1 higher potential difference a lower current This reduces the rate of energy transfer from the cables. 1 1 1 AO1 P2.4.3 02.2 For: gives access to mains electricity Against: unsightly OR danger of children climbing Accept any sensible answers. 1 1 AO3 WS 1.4 03.1 3.5 × 4 14 (V) Accept 14 (V) with no working shown for 2 marks. 1 1 AO2 P2 03.2 50 = current × 14 3.57 (A) Accept 3.57 (A) with no working shown for 3 marks. Accept 3.6. 1 1 1 AO2 P2.4.1 03.3 energy transferred = × time Accept E = P t 1 AO1 P2.4.2 03.4 50 × 600 30 000 J Accept 30 000 with no working shown for 2 marks. 50 × 10 = 500 1 mark. Do not accept j for the unit. 1 1 1 AO1×1 AO2×2 P2.4.2 03.5 systematic error 1 AO3 WS 3.7 04.1 energy transferred = charge flow × p.d. Accept E = Q V 1 AO1 P2.4.2 04.2 216 = charge flow × 12 18 coulombs Accept 18 with no working shown for 3 marks. Accept C for coulombs. 1 1 1 1 2×AO2 P2.4.2
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