Pearson Edexcel International GCSE (9–1) · PHYSICS · Section
ELECTROMAGNETIC INDUCTION
15 practice questions
Practice questions
1–10 of 15
Question 1
1 mark · Easy
Answer and see the solution →State what is meant by electromagnetic induction.
Question 2
1 mark · Easy
Answer and check →Which of these actions will increase the size of the voltage induced in a coil of wire?
- A.Moving the magnet more quickly into the coil
- B.Using a weaker magnet
- C.Reducing the number of turns in the coil
- D.Keeping the magnet stationary inside the coil
Question 3
1 mark · Easy
Answer and see the solution →Name one way to increase the current produced by electromagnetic induction in a generator.
Question 4
2 marks · Easy
Answer and see the solution →(a)[1 mark]A student moves a straight wire downwards between the poles of a magnet. What is observed in the wire?
(b)[1 mark]Explain why this happens.
Question 5
1 mark · Easy
Answer and see the solution →What is the primary purpose of a generator?
Question 6
2 marks · Easy
Answer and see the solution →(a)[1 mark]A dynamo is attached to a bicycle wheel. Describe briefly what happens to the magnetic field inside the dynamo as the bicycle wheel turns.
(b)[1 mark]Explain how the turning magnet inside the dynamo leads to a current in the coil.
Question 7
2 marks · Easy
Answer and see the solution →Explain why no voltage is produced in a wire if it is held still in a magnetic field and why a voltage is produced when the wire is moved.
Question 8
1 mark · Easy
Answer and see the solution →Give one practical application of electromagnetic induction.
Question 9
4 marks · Normal
Answer and see the solution →A straight wire is moved quickly at right angles through the magnetic field between the poles of two magnets, as shown below.
A wire AB moving at right angles across a uniform magnetic field between north and south poles. (a)[1 mark]State the name of the process by which a voltage is produced in the wire.
(b)[2 marks]Explain how the movement of the wire causes a voltage to be induced in it.
(c)[1 mark]Give one way, other than moving the wire faster, to increase the size of the induced voltage.
Question 10
3 marks · Normal
Answer and see the solution →Generators are used in power stations to produce electricity for homes and businesses.
Explain, in terms of electromagnetic induction, how a generator can produce electricity. Include what needs to move and why this movement is necessary.