Question Detail

PHY 102 Electromagnetic Induction 2 Objective Question
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Question

What are Eddy Currents?
Options
A Currents flowing in primary and secondary windings of a transformer.
B Static charges accumulating on a conductor's surface.
C Circulating currents induced within the metallic core or part of a system due to a changing magnetic field.
Correct Answer
D High-frequency alternating currents used in induction heating.
Correct Answer

Option C is the correct answer.

Detailed Explanation

Page 25 states: 'The induced emf within this metallic part of the system causes a circulating current to flow around it and this type of core current is known as an Eddy Current.' Page 28 further clarifies: 'An eddy current is a current set up in a conductor in response to a changing magnetic field. They flow in closed loops in a plane perpendicular to the magnetic field.'

Hint

Think about currents induced in bulk materials, not just wires, when exposed to changing magnetic fields.

Question Info

Course: PHY 102
Topic: Electromagnetic Induction 2
Type: Objective
Difficulty: Not specified
Question 735 of 1819
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