Which of the following defines electromagnetic induction : - Vidyadip

MCQ

Which of the following defines electromagnetic induction :

✓
When the magnetic field associated with a coil changes, an induced electric current flows through the coil.
B
Electric current induces magnetic field near the wire carrying current.
C
Two permanent magnets exert force on each other.
D
Electrolyte disintegrates into ions in a battery.

✓

Answer

Correct option: A.

When the magnetic field associated with a coil changes, an induced electric current flows through the coil.

The magnetic field associated with a coil is the magnetic flux flowing normally to the surface area of the current $-$ carrying coil. When it changes, an emf is produced opposing the cause. This is the principle of Electromagnetic induction.

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