Pearson Edexcel International GCSE (9–1), Physics UNIT: 4PH1 Science (Double Award) 4SD0 PAPER: 1P. 100% proven pass rate

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Answer ALL questions. Some questions must be answered with a cross in a box . If you change your mind about an answer, put a line through the box and then mark your new answer with a cross . 1 The ... region of space around a magnet is known as a magnetic field. (a) Which of these diagrams correctly represents the magnetic field around a bar magnet? (1) A N S B N S C N S D N S https://britishstudentroom-b430a.web.app/4 *P70705A0436*  (b) The diagram shows two bar magnets placed close together. N S N S (i) Which of these describes what happens to the two magnets? (1) A nothing happens B they attract C they repel D they spin https://britishstudentroom-b430a.web.app/ *P70705A0536* Turn over 5 (ii) Which of these magnet arrangements gives a uniform field between the poles? (1) S N N N A B N S S N S S S C D (c) State the name of a material that would be suitable for use as a permanent magnet. (1) .................................................................................................................................................................................................................................................................................... https://britishstudentroom-b430a.web.app/6 *P70705A0636*  (d) Describe an investigation that could be used to determine the shape of the magnetic field around a bar magnet. 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(Total for Question 1 = 7 marks) https://britishstudentroom-b430a.web.app/ *P70705A0736* Turn over 7 BLANK PAGE https://britishstudentroom-b430a.web.app/8 *P70705A0836*  2 A scientist wants to determine the half-life of a radioactive isotope. The scientist measures the count rate from the radioactive isotope. (a) State how the scientist should correct the count rate for background radiation. 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(b) The graph shows how the activity of the radioactive isotope varies with time [Show More]

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