Buster Tests - GCSE Revision Tests

GCSE Physics - Electricity & Magnetism

Electromagnets & Induction

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1 A wire with a current flowing through it produces a magnetic field. Which of these diagrams is correct?

[1]

A B

2 This time the current is flowing through the wire downwards. Which of these diagrams is correct?

[1]

A B

3 This time the current is flowing towards you through the wire. Which of these diagrams is correct?

[1]

A B

4 Reginald has set up an electromagnet, but it is weak and won't even attract paperclips. How might Reginald make the electromagnet stronger?

[2]

Increase the current Decrease the number of turns Use a soft iron core instead of a nail Decrease the amount of wire used

5 What are the advantages of using a soft iron core for an electomagnet?

[1]

It looses its magnetism quickly It isn't too hard It looses its magnetism slowly

6 a) Reginald has made a model solenoid to show to his pal. Which pole is pole "A"?

[1]

North South

b) Which pole is pole "B"?

[1]

North South

7 __________ is induced in a conductor when it moves through a magnetic field.

[1]

8 Name two factors that could affect the induced voltage of an EM induction.

[2]

9 a) The size of an alternating voltage can be changed using a step-up or step-down __________.

[1]

b) The quantity of _________ specifically controls the change in voltage in these devises.

[1]

10 a) Higher The voltage at the primary is 5 volts and at the secondary is 10 volts. There are 300 turns on the secondary. How many turns are there on the primary?

[1]

b) The voltage at the primary is 13 volts. There are 15 turns at the primary and 75 at the secondary. What is the voltage at the secondary?

[2]

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Subjects

• GCSE Phsyics
• AS Physics
• A2 Phsyics
• GCSE Chemistry
• Driving Theory

Tests on the same topic

• Energy & Potential Difference in Circuits - Extra Calculations
• Energy & Potential Difference in Circuits
• Mains Electricity
• Units
• Electric Charge
• Electromagnets & Induction

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