Unit 3 Topic 2 - Electromagnetism

Question 1

Define Coulomb’s Law and recognise that it describes the force exerted by electrostatically charged objects on other electrostatically charged objects

Answer 1

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Question 2

Define the terms electric fields, electric field strength and electric potential energy

Answer 2

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Question 3

Define the term magnetic field

Answer 3

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Question 4

Recall how to represent magnetic field lines, including sketching magnetic field lines due to moving electric charge, electric currents and magnets

Answer 4

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Question 5

Recall that a moving electric charge generates a magnetic field

Answer 5

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Question 6

Determine the magnitude and direction of a magnetic field around electric current-carrying wires and inside solenoids

Answer 6

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Question 7

Recall that electric current-carrying conductors and moving electric charges experience a force when placed in a magnetic field

Answer 7

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Question 8

Define the terms magnetic flux, magnetic flux density, electromagnetic induction, electromotive force (EMF), Faraday’s Law and Lenz’s Law

Answer 8

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Question 9

Describe the process of inducing an EMF across a moving conductor in a magnetic field

Answer 9

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Question 10

Explain how Lenz’s Law is consistent with the principle of conservation of energy

Answer 10

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Question 11

Explain how transformers work in terms of Faraday’s Law and electromagnetic induction

Answer 11

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Question 12

Define and explain electromagnetic radiation in terms of electric fields and magnetic fields

Answer 12

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