Question: If the magnetic flux through a coil changes, what happens to the induced EMF? (2023)
Options:
It remains constant
It increases
It decreases
It is induced
Correct Answer: It is induced
Exam Year: 2023
Solution:
An induced EMF is generated when there is a change in magnetic flux through a coil.
If the magnetic flux through a coil changes, what happens to the induced EMF? (2
Practice Questions
Q1
If the magnetic flux through a coil changes, what happens to the induced EMF? (2023)
It remains constant
It increases
It decreases
It is induced
Questions & Step-by-Step Solutions
If the magnetic flux through a coil changes, what happens to the induced EMF? (2023)
Step 1: Understand what magnetic flux is. Magnetic flux is the measure of the amount of magnetic field passing through a coil.
Step 2: Recognize that a coil is a loop of wire. When magnetic flux changes through this coil, it means the strength or direction of the magnetic field is changing.
Step 3: Learn about induced EMF. EMF stands for electromotive force, which is the voltage generated in the coil due to the change in magnetic flux.
Step 4: Apply Faraday's Law of Electromagnetic Induction. This law states that a change in magnetic flux through a coil induces an EMF in that coil.
Step 5: Conclude that when the magnetic flux through the coil changes, an induced EMF is generated.
Electromagnetic Induction – The principle that a change in magnetic flux through a coil induces an electromotive force (EMF) in the coil.
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