(a)(ii) substitution Correct answer with no working (2) (1) shown gains two marks. V = 0.5 × 12 evaluation (1) V = 6 (V) (a)(iii) P / ammeter reading would  increase. They(both) would increase for (1) (2) two marks Q / voltmeter reading would  increase (1) (a)(iv) (current/it) decrease (1) Ignore (1) slowing down (b) All three lines correct for 2 marks One or two lines correct for 1 mark More than one line against (2) any box cannot score more than 1 mark in total. Q10. Question Answer Acceptable answers Mark Number (a)(i) C (1) Question Answer Acceptable answers Mark Number (a)(ii) D (1) Question Answer Acceptable answers Mark Number (a)(iii) substitution (1) 9 = I × 600 allow substitution and transposition (1) I = 9/600 transposition in either order give evaluation (1) = 0.015 (A) full marks for correct answer, no OR=15 mA working (3) Question Answer Acceptable answers Mark Number (a)(iv) An explanation linking the following battery voltage • has decreased (1) (so) • less current (than expected) (1) (2) Question Answer Acceptable answers Mark Number (b)(i) An explanation linking the following points • working (1) (because) • diode will only conduct in (2)
(a)(ii) substitution (1) V = 0.5 × 12 evaluation (1) V = 6 (V) Correct answer with no working shown gains two marks. (2) (a)(iii)  P / ammeter reading would increase. (1)  Q / voltmeter reading would increase (1) They(both) would increase for two marks (2) (a)(iv) (current/it) decrease (1) Ignore slowing down (1) (b) All three lines correct for 2 marks One or two lines correct for 1 mark More than one line against any box cannot score more than 1 mark in total. (2) Q10. Question Number Answer Acceptable answers Mark (a)(i) C (1) Question Number Answer Acceptable answers Mark (a)(ii) D (1) Question Number Answer Acceptable answers Mark (a)(iii) substitution (1) 9 = I × 600 transposition (1) I = 9/600 evaluation (1) = 0.015 (A) OR=15 mA allow substitution and transposition in either order give full marks for correct answer, no working (3) Question Number Answer Acceptable answers Mark (a)(iv) An explanation linking the following • battery voltage has decreased (1) • (so) less current (than expected) (1) (2) Question Number Answer Acceptable answers Mark (b)(i) An explanation linking the following points • working (1) • (because) diode will only conduct in (2)
p2_revision_pack_mark_scheme.docx