AS Level Physics A H156/01 Breadth in physics

Oxford Cambridge and RSA Please write clearly in black ink. Do not write in the barcodes.Centre number Candidate number First name(s) � Last name � OCR is an exempt Charity Turn over

*8190102189*

© OCR 2020 [601/4742/8]

DC (ST/CT) 189368/5

INSTRUCTIONS

• Use black ink. You can use an HB pencil, but only 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 70.• The marks for each question are shown in brackets [ ].• This document has 28 pages.

ADVICE

• Read each question carefully before you start your answer.

You must have:

• the Data, Formulae and Relationships Booklet

You can use:

• a scientific or graphical calculator • a ruler (cm/mm) Friday 09 October 2020 – Morning AS Level Physics A H156/01 Breadth in physics

Time allowed: 1 hour 30 minutes

*H15601*

PMT

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SECTION A

You should spend a maximum of 25 minutes on this section.Answer all the questions.Write your answer to each question in the box provided.

• One of Kirchhoff’s laws is stated below.

The sum of the currents entering a point in a circuit is equal to the sum of the currents leaving the same point.Which quantity is conserved according to this law?A charge B energy C mass D potential difference Your answer [1]

• An object is in equilibrium under the action of three coplanar forces F, R and W.

The diagram below shows the forces F and W.

F = 6.2 N

W = 4.5N

The angle between F and W is 90°. Which row shows the correct magnitude of R and the approximate direction of R?Magnitude of R / N Direction of R A 7.7 B 7.7

C 10.7

D 10.7

Your answer [1] PMT

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• A ball, made from scrunched-up paper, is dropped from rest at time t = 0.

It reaches terminal velocity before it hits the ground.Which acceleration a against time t graph is correct for the ball in flight?A

a t B

a t C

a t D

a t Your answer [1] PMT

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• An electron with initial kinetic energy of 100 eV and initial speed of 5.9 × 10

6 m s −1 is accelerated through a potential difference of 250 V.What is the final speed of this electron?

A 5.9 × 10

6 m s −1

B 7.3 × 10

6 m s −1

C 9.4 × 10

6 m s −1

D 1.1 × 10

7 m s −1 Your answer [1]

• The diagram below shows the oscilloscope trace for an electrical signal.

1cm1 cm The frequency of the signal is 250 Hz.What is the time-base setting of the oscilloscope?A 1 ms cm −1 B 2 ms cm −1 C 4 ms cm −1 D 8 ms cm −1 Your answer [1] PMT