(c) the greater the current, the greater the force or field • accept the converse answers must refer to a pattern describing a continuous variable do not accept becomes more ‘it magnetic’ the more turns, the greater the force or field • accept the converse accept more turns, the more powerful ‘the or stronger the magnet’ answers must include a comparison more turns, the more powerful it is insufficient ‘the is’ accept electromagnet with 200 turns is ‘the stronger’ accept the turns more than doubles the ‘doubling force’ award one mark if the answer refers to a number of coils rather than number of turns 2 (L7) [5] M10. (a) (i) the number of turns or coils of wire accept ‘the coils’ accept ‘the turns’ 1 (L5) (ii) any from one the current • the length or thickness or material of the wire or coil • accept voltage or ‘the power’ accept ‘the wire’ the circumference of the coil • the size of paper-clips • accept paper-clips’; of the coil on the ‘the ‘position nail’; of the accept between ‘tightness coil’; ‘distance turns’; ‘the nail’ do not accept number of paper-clips’ ‘the 1 (L5) (iii) any one from count the paper-clips picked up • accept of paper-clips’; ‘number ‘count them’
(c) • the greater the current, the greater the force or field accept the converse answers must refer to a pattern describing a continuous variable do not accept ‘it becomes more magnetic’ • the more turns, the greater the force or field accept the converse accept ‘the more turns, the more powerful or stronger the magnet’ answers must include a comparison ‘the more turns, the more powerful it is’ is insufficient accept ‘the electromagnet with 200 turns is stronger’ accept ‘doubling the turns more than doubles the force’ award one mark if the answer refers to a number of coils rather than number of turns 2 (L7) [5] M10. (a) (i) the number of turns or coils of wire accept ‘the coils’ accept ‘the turns’ 1 (L5) (ii) any one from • the current • the length or thickness or material of the wire or coil accept ‘the voltage or power’ accept ‘the wire’ • the circumference of the coil • the size of paper-clips accept ‘the paper-clips’; ‘position of the coil on the nail’; ‘tightness of the coil’; accept ‘distance between turns’; ‘the nail’ do not accept ‘the number of paper-clips’ 1 (L5) (iii) any one from • count the paper-clips picked up accept ‘number of paper-clips’; ‘count them’
physics_part_1_question_pack.docx