- Mark Scheme Question 1 2 Answer D - slip rings and brushes A - The needle moves briefly in one direction and then returns to the centre. Marks 1 1 3(a)(i) nothing / zero / 0 B1 3(a)(ii) V = IR or V / R in words, symbols or numbers C1 6/10 C1 0.6 C1 0.6A OR amp(s) OR ampere(s) A1 candidate’s (a)(ii) B1 (milli)ammeter OR galvanometer NOT ampmeter B1 nothing / stays the same / half-way B1 3(a)(iii) 4(a) 4(b)(i) AO Element / Notes Guidance - Mark Scheme Question Answer Marks 4(b)(ii) nothing / stays the same / half-way B1 4(b)(iii) nothing / stays the same / half-way B1 4(b)(iv) it / arrow / pointer moves / goes / flicks OR current changes M1 left and right OR backwards and forwards A1 4(c) generator OR dynamo OR microphone B1 5(a) SN B1 5(b) attractive / attract B1 5(c) attractive / attract B1 6(a) iron B1 6(b) V 1 / V 2 = N 1 / N 2 in words, symbols or numbers C1 correct substitution C1 12 (V) A1 AO Element / Notes Guidance - Mark Scheme Question Answer Marks AO Element / Notes Guidance 7 top box ticked, increase or decrease a.c. B1 8 core B1 9(a) ammeter B1 9(b) 2nd box ticked, current B1 10(a) resistor shown joining top two wires or bottom two wires M1 M1 accept diagonal connection complete series circuit A1 note: 2 resistors in series gains only one mark 10(b) 1.5 ( ) B1 11(a) voltmeter B1 11(b) ammeter B1 11(c) correct symbol for ammeter B1 NOT ampmeter accept multimeter on current range NOT ampmeter - Mark Scheme Question Answer Marks ammeter in series with lamp and voltmeter across cell condone voltmeter connected in parallel B1 lamp will blow / burn out B1 accept blow up / glow too / very brightly ignore bright / won’t work 13(a) transformer shown with one coil across input and other coil across output B1 accept any reasonable attempt at transformer symbol 13(b) factor of 2 e.g. 12 / 6, 6 / 12 or 2:1 C1 ignore units 1:2 OR 1 to 2 A1 idea of points to north (pole of Earth) M1 OR repels when freely suspended / floating on water A1 a (known) N pole glows less brightly / dimmer OR stops glowing B1 12 14 15 AO Element / Notes Guidance - Mark Scheme Question 16 17 Answer A - OP only any two from: Marks AO Element / Notes Guidance 1 B2 friction/rubbing (between clothing and seat) lady becomes charged discharged when touches handle 18(a) accept charge travels through/to/from lady (from/to handle) / charge is earthed V 1 / V 2 = N 1 / N 2 in any form C1 correct substitution C1 80 (V) A1 18(b)(i) zero OR 0 (V) M1 18(b)(ii) idea of requirement of varying field / flux linkage A1 19 C - pushing the magnet into the coil 1 - Mark Scheme Question 20 Answer Marks iron clearly indicated B1 steel clearly indicated B1 damp B1 22(a) electromagnet B1 22(b) (magnetic field/magnetism) can be controlled / can be switched off B1 (Place inside) coil OR hammer it OR heat it B1 coil connected to a.c. (supply) OR hammer for long time OR heat to high temperature then cool B1 21 23 24 25 C - a generator D - Only the steel remains magnetised. 1 1 AO Element / Notes Guidance - Mark Scheme Question 26 27 Answer D - towards the top of the diagram B - moving both the magnet and the coil to the left at the same speed 28 steel 29 C 30 31 C - It reverses the direction of the current in the coil after every 180° rotation of the coil. turns faster OR greater moment / turning effect Marks AO Element / Notes Guidance 1 1 B1 1 1 1 [Total: 64]