1.
State what is meant by a magnetic field. [1]
JD SCIENCE
Magnetism and electromagnetism
Answer all questions. Show working. Answers are in a separate file on the Worksheets page — do not look at them until you have finished.
2.
State what is meant by a permanent magnet. [1]
3.
State what is meant by an induced magnet. [1]
4.
State what is meant by the motor effect. [1]
5.
State what is meant by Fleming's left-hand rule. [1]
6.
State what is meant by an electromagnet. [1]
7.
State what is meant by electromagnetic induction. [1]
8.
State what is meant by a transformer. [1]
9.
State what is meant by the generator effect. [1]
10.
State what is meant by a solenoid. [1]
11.
Amira is asked about a magnetic field in a AQA Physics paper.
(a) Describe a magnetic field. [2]
(b) Explain why a magnetic field is important in this topic. [3]
12.
Amira is asked about a permanent magnet in a AQA Physics paper.
(a) Describe a permanent magnet. [2]
(b) Explain why a permanent magnet is important in this topic. [3]
13.
Amira is asked about an induced magnet in a AQA Physics paper.
(a) Describe an induced magnet. [2]
(b) Explain why an induced magnet is important in this topic. [3]
14.
Amira is asked about the motor effect in a AQA Physics paper.
(a) Describe the motor effect. [2]
(b) Explain why the motor effect is important in this topic. [3]
15.
Amira is asked about Fleming's left-hand rule in a AQA Physics paper.
(a) Describe Fleming's left-hand rule. [2]
(b) Explain why Fleming's left-hand rule is important in this topic. [3]
16.
Amira is asked about an electromagnet in a AQA Physics paper.
(a) Describe an electromagnet. [2]
(b) Explain why an electromagnet is important in this topic. [3]
17.
F = BIl. B=0.20 T, I=3.0 A, l=0.50 m [3]
18.
Transformer: 200 turns to 50 turns, 12 V input. Vs [3]
19.
If VpIp = VsIs, 230 V, 0.2 A primary, 12 V secondary. Is [3]
20.
A coil has 100 turns. Turns ratio to 25 turns [3]
21.
Force on 4 cm of wire (0.04 m), B=0.5 T, I=2 A [3]
22.
A magnet induces 0.12 V for 0.20 s. Mean induced V is given; flux change idea — calculate V×t [3]
23.
Amira carries out a AQA-style required practical linked to magnetism and electromagnetism. This is a typical AQA required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
24.
Amira carries out collecting valid data for magnetism and electromagnetism. This is a typical AQA required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
25.
Amira carries out drawing a graph for magnetism and electromagnetism. This is a typical AQA required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
26.
Amira carries out evaluating a method about magnetism and electromagnetism. This is a typical AQA required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
27.
Compare a magnetic field with a permanent magnet. [4]
28.
Compare a permanent magnet with an induced magnet. [4]
29.
Compare an induced magnet with the motor effect. [4]
30.
Compare the motor effect with Fleming's left-hand rule. [4]
31.
Apply your knowledge of electromagnetic induction to this situation: or a field changes through a coil [3]
32.
Apply your knowledge of a transformer to this situation: Vp/Vs = np/ns [3]