one of before rubbing transferred from cloth removed by friction (1) (transferred) to plastic (1) (ii) opposite to charge on charge on cloth is (2) plastic (1) equal to positive same size as charge on the plastic charge on plastic (1) electrons transferred from the cloth equal to electrons lost by cloth Q6. Answer Acceptable Mark answers (i) B electrons (1) (ii) An explanation negative charge linking (reject protons and (negative) electrons positive charge for transfer (1) this mp) moves because of cloth loses friction/from cloth (to electrons/negative base) (1) charge (to base) = 2 (2) (iii) A suggestion to cup/metal is a include charge conductor ignore (any) could move metal is not an through cup /metal insulator to earth/ (1) (cup is) earthed ground / to/ through (1) student's hand (2) (iv) (1) Q7. Answer Acceptable Mark answers (i) D an equal positive (1) charge (ii) an explanation charge/electrons linking any two of move accept friction (between balloon gains cloth and balloon) (1) electrons from the transfer of electrons cloth for 2 marks (1) (electrons/negative charges move) from cloth to balloon (1) (2) (iii) a description earthed / neutral including two from (negative) charge for the following: electrons accept electrons move to balloon becomes (2)
one of removed by friction (1) (transferred) to plastic (1) before rubbing transferred from cloth (ii) opposite to charge on plastic (1) equal to charge on the plastic (1) charge on cloth is positive same size as charge on plastic electrons transferred from the cloth equal to electrons lost by cloth (2) Q6. Answer Acceptable answers Mark (i) B electrons (1) (ii) An explanation linking (negative) electrons transfer (1) because of friction/from cloth (to base) (1) negative charge (reject protons and positive charge for this mp) moves cloth loses electrons/negative charge (to base) = 2 (2) (iii) A suggestion to include charge (any) could move through cup /metal (1) (cup is) earthed (1) cup/metal is a conductor ignore metal is not an insulator to earth/ ground / to/ through student's hand (2) (iv) (1) Q7. Answer Acceptable answers Mark (i) D an equal positive charge (1) (ii) an explanation linking any two of friction (between cloth and balloon) (1) transfer of electrons (1) (electrons/negative charges move) from cloth to balloon (1) charge/electrons move accept balloon gains electrons from the cloth for 2 marks (2) (iii) a description including two from the following: balloon becomes earthed / neutral (negative) charge for electrons accept electrons move to (2)
11_20160124221326_P2_static_electricity_Q's_v1.docx