GCSE PHYSICS HIGHER TIER PAPER 1_2020

Physics_paper_1_2020 Materials For this paper you must have:  a ruler  a scientific calculator  the Physics Equations Sheet (enclosed). Instructions  Use black ink or black ball-point pen. Pencil should only be used for drawing.  Fill in the boxes at the top of this page.  Answer all questions in the spaces provided.  Do not write outside the box around each page or on blank pages.  If you need extra space for your answer(s), use the lined pages at the end of this book. Write the question number against your answer(s).  Do all rough work in this book. Cross through any work you do not want to be marked.  In all calculations, show clearly how you work out your answer. Information  The maximum mark for this paper is 100.  The marks for questions are shown in brackets.  You are expected to use a calculator where appropriate.  You are reminded of the need for good English and clear presentation in your answers. *Jun20 4631H01* IB/H/Jun20/E14 8463/1H For Examiner’s Use Question Mark 1 2 3 4 5 6 7 8 9 10 TOTAL 2 Do not write outside the *02 * IB/H/Jun20/8463/1H There are no questions printed on this page DO NOT WRITE ON THIS PAGE ANSWER IN THE SPACES PROVIDED box 3 Do not write outside the *03 * IB/H/Jun20/8463/1H 0 1 1 Answer all questions in the spaces provided. box 0 1 A student investigated how the current in a filament lamp varied with the potential difference across the Figure 1 shows part of . Complete Figure 1 by adding an ammeter and a voltmeter. Use the corr ect circ uit sym bols . [3 ma rks ] 4 Do not write outside the *03 * IB/H/Jun20/8463/1H Question 1 continues on the next page Turn over ► 4 Do not write outside the *04 * IB/H/Jun20/8463/1H 0 1 2 box . The student reversed the connections to the power supply and obtained negative values for the current and potential difference. Draw a line on Figure 2 to show the relationship between the negative values of current and potential difference. [2 marks] Figure 2 shows some of the results. Figure 2 5 Do not write outside the *05 * IB/H/Jun20/8463/1H 0 1 3 0 1 5 . Write down the equation which links current (I), potential difference (V) and resistance (R). [1 mark] box 0 1 . 4 . 6 Do not write outside the *05 * IB/H/Jun20/8463/1H A second student did the same investigation. The ammeter used had a zero error. What is meant by a zero error? [1 mark] Turn over for the next question Turn over ► 11 7 Do not write outside the *06 * IB/H/Jun20/8463/1H 0 2 1 box . The torch contains one LED, one switch and three cells. Which diagram shows the correct circuit for the torch? Tick () one box. [1 mark] 0 2 Figure 3 shows an LED torch. Figure 3 8 Do not write outside the IB/H/Jun20/8463/1H 0 2 2 0 2 3 . Write down the equation which links charge flow (Q), current (I) and time (t). [1 mark] box . Th e tor ch wo rke d for 14 40 0 sec on ds bef ore the cell s ne ed ed rep laci ng. The current the was 50 mA. Calculate the charge flow through the [3 m ar ks ] 9 Do not write outside the IB/H/Jun20/8463/1H 0 2 4 0 2 5 0 2 6 . When replaced, the cells were put into the torch the wrong way around. Explain why the torch did not work. [2 marks] Question 2 continues on the next page * 0 7 * Turn over ► . Write down the equation which links efficiency, total power input and useful power output. box [1 mark] . T h e t o t a l p o w e r i n p u t t o t 1 0 Do not write outside the IB/H/Jun20/8463/1H he LED was 0.24 W. The efficiency of the LED was 0.75 Calculate the useful power output of the LED. [3 marks] *0 *  Useful power output = W 11 1 1 Do not write outside the *09.