90937
1
909370
SUPERVISOR’S USE ONLY
Level 1 Physics, 2016
90937 Demonstrate understanding of aspects
of electricity and magnetism
2.00 p.m. Tuesday 15 November 2016
Credits: Four
Achievement
Demonstrate understanding of aspects
of electricity and magnetism.
Achievement with Merit
Demonstrate in-depth understanding of
aspects of electricity and magnetism.
Achievement with Excellence
Demonstrate comprehensive
understanding of aspects of electricity
and magnetism.
Check that the National Student Number (NSN) on your admission slip is the same as the number at the
top of this page.
You should attempt ALL the questions in this booklet.
Make sure that you have Resource Sheet L1–PHYSR.
In your answers use clear numerical working, words and / or diagrams as required.
Numerical answers should be given with an appropriate SI unit.
If you need more room for any answer, use the extra space provided at the back of this booklet and
clearly number the question.
Check that this booklet has pages 2 –12 in the correct order and that none of these pages is blank.
YOU MUST HAND THIS BOOKLET TO THE SUPERVISOR AT THE END OF THE EXAMINATION.
Achievement
TOTAL
09
ASSESSOR’S USE ONLY
© New Zealand Qualifications Authority, 2016. All rights reserved.
No part of this publication may be reproduced by any means without the prior permission of the New Zealand Qualifications Authority.
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Achievement exemplar 2016 Subject: Physics Q 1 Grade
score A3 Standard: 90937 Total score: 09 Annotation This answer was A3 as the answers show knowledge of conductors allowing flow of charge, the rules for forces of attraction and repulsion between charges and an ability to calculate power. To obtain a higher score the answer should refer to charging being the result of electron transfer. 2 A3 The answer recognises and a parallel circuit and gives an advantage of this type of circuit. While the incorrect circuit is drawn in part c(ii) the meters are drawn correctly connected. In part (d) the reduction in power is linked to reduced current (amps) due to an increase in resistance. To obtain a higher score in this question the student needs to show understanding of the rules for current and voltage in circuits and apply these in calculating power. 3 A3 The answers showed an understanding that the spacing of field lines represents the magnetic field strength and that the right-­hand grip rule can be used to find the direction of the current. The answer to part (c) is correct despite not correctly changing units as unit conversion was demonstrated in question 1 (d). The obtain a higher score the student should take care in drawing the magnetic field, using clear solid lines that do not join or cross over each other and explain how they know which end of the electromagnet is north.