Question

Which of the following devices is based on the principle of electromagnetic induction?

• A. Electric motor
• B. Electric fan
• C. Electric bulb
• D. Electric generator

Answer 1

Answer:

D. Electric generator

• Electromagnetic induction is the production of an electromotive force (voltage) across an electrical conductor in a changing magnetic field.

• Electric generators work on this principle.Electric generators are a prime example of devices that operate based on the principle of electromagnetic induction.

• They typically consist of coils of wire that are mechanically rotated within a magnetic field.

• This rotation causes the magnetic flux through the coils to continuously change, inducing an electromotive force (voltage) and consequently generating an electric current.

• The mechanical energy used to rotate the coils is converted into electrical energy through this process.