In a generator, if the speed of rotation is doubled, what happens to the induced

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Question: In a generator, if the speed of rotation is doubled, what happens to the induced EMF?

Options:

Correct Answer: It doubles

Solution:

The induced EMF in a generator is directly proportional to the speed of rotation. Therefore, if the speed is doubled, the induced EMF also doubles.

In a generator, if the speed of rotation is doubled, what happens to the induced EMF?

In a generator, if the speed of rotation is doubled, what happens to the induced EMF?

Step 1: Understand what EMF means. EMF stands for Electromotive Force, which is the voltage generated by the generator.
Step 2: Know that the induced EMF in a generator depends on how fast the generator is spinning.
Step 3: Remember the relationship: if you increase the speed of rotation, the induced EMF increases.
Step 4: If the speed of rotation is doubled, it means the generator is spinning twice as fast.
Step 5: Since the induced EMF is directly proportional to the speed, doubling the speed will also double the induced EMF.

Electromagnetic Induction – The principle that describes how a changing magnetic field can induce an electromotive force (EMF) in a conductor.
Proportionality of EMF and Rotation Speed – The relationship that states the induced EMF in a generator is directly proportional to the speed of rotation of the coil within the magnetic field.