A loop of wire is placed in a changing magnetic field. What phenomenon occurs? (

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Question: A loop of wire is placed in a changing magnetic field. What phenomenon occurs? (2021)

Options:

Correct Answer: Electromagnetic induction

Exam Year: 2021

Solution:

When a loop of wire is placed in a changing magnetic field, electromagnetic induction occurs, generating an electromotive force (EMF) in the loop.

A loop of wire is placed in a changing magnetic field. What phenomenon occurs? (2021)

A loop of wire is placed in a changing magnetic field. What phenomenon occurs? (2021)

Step 1: Understand that a loop of wire can conduct electricity.
Step 2: Recognize that a magnetic field is an invisible force field around magnets.
Step 3: Know that a changing magnetic field means the strength or direction of the magnetic field is changing over time.
Step 4: When the magnetic field around the loop changes, it affects the electrons in the wire.
Step 5: This change in the magnetic field causes the electrons to move, creating an electric current.
Step 6: This process of generating electricity from a changing magnetic field is called electromagnetic induction.
Step 7: The electric current generated is associated with a measure called electromotive force (EMF).

Electromagnetic Induction – The process by which a changing magnetic field induces an electromotive force (EMF) in a conductor.