OCR A Level Physics A H556/02 Exploring physics JUNE 2022

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A Level Physics A H556/02 Exploring physics JUNE 2022 Time allowed: 2 hours 15 minutes INSTRUCTIONS • Use black ink. You can use an HB pencil, but on... ly for graphs and diagrams. • Write your answer to each question in the space provided. If you need extra space use the lined pages at the end of this booklet. The question numbers must be clearly shown. • Answer all the questions. • Where appropriate, your answer should be supported with working. Marks might be given for using a correct method, even if your answer is wrong. INFORMATION • The total mark for this paper is 100. • The marks for each question are shown in brackets [ ]. • Quality of extended response will be assessed in questions marked with an asterisk (*). • This document has 28 pages. ADVICE • Read each question carefully before you start your answer. OCR is an exempt Charity Turn over SECTION A You should spend a maximum of 30 minutes on this section. Write your answer to each question in the box provided. Answer all the questions. 1 A current is present in the circuit below. electrolyte The resistor is made from a length of wire. Which row gives the correct charge carriers in the resistor and in the electrolyte? Charge carriers in the resistor Charge carriers in the electrolyte A Electrons Electrons B Electrons Ions C Electrons and protons Ions and electrons D Electrons and ions Ions and protons Your answer [1] 2 The half-life of fluorine-18 isotope is T. After time t = 4T the number of fluorine-18 nuclei in a source is N. How many fluorine-18 nuclei have decayed in the time interval from t = 0 to t = 4T? A 3 N B 4 N C 15 N D 16 N Your answer [Show More]

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