What happens to the induced EMF if the speed of the magnet moving through a coil

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Question: What happens to the induced EMF if the speed of the magnet moving through a coil is doubled? (2022)

Options:

Correct Answer: It doubles

Exam Year: 2022

Solution:

The induced EMF doubles if the speed of the magnet moving through the coil is doubled.

What happens to the induced EMF if the speed of the magnet moving through a coil is doubled? (2022)

What happens to the induced EMF if the speed of the magnet moving through a coil is doubled? (2022)

Step 1: Understand that EMF stands for Electromotive Force, which is generated when a magnet moves through a coil of wire.
Step 2: Know that the amount of EMF induced in the coil depends on how fast the magnet is moving.
Step 3: If the speed of the magnet is increased, the induced EMF also increases.
Step 4: Specifically, if the speed of the magnet is doubled, the induced EMF will also double.
Step 5: This is because a faster-moving magnet creates a stronger change in magnetic field within the coil, leading to more induced EMF.

Faraday's Law of Electromagnetic Induction – The induced EMF in a coil is directly proportional to the rate of change of magnetic flux through the coil, which is affected by the speed of the magnet.
Magnetic Flux – Magnetic flux is the product of the magnetic field and the area through which it passes, and its change induces EMF.