Physics Electromagnetic Induction ETEA 2016
PMDC Verified Question 68 of 69
The phenomenon of mutual induction is practically used is:
A
Transformer
B
Generator
C
Galvanometer
D
Avometer
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Transformer
Concept:

Mutual induction is the process where a changing current in one coil induces an electromotive force (EMF) in a neighboring coil.

Solution:

  • A transformer operates fundamentally on this principle. An alternating current in the primary coil creates a continuously changing magnetic flux, which links with the secondary coil to induce an EMF.


Why other options are incorrect:

Generators rely on motional electromagnetic induction (a coil rotating in a magnetic field). Galvanometers and Avometers operate on the principle of magnetic torque experienced by a current-carrying coil.

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