What happens to the induced current when the magnetic field is removed from a cl

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Question: What happens to the induced current when the magnetic field is removed from a closed loop?

Options:

Correct Answer: It stops immediately

Solution:

When the magnetic field is removed from a closed loop, the induced current stops immediately as there is no longer a changing magnetic flux.

What happens to the induced current when the magnetic field is removed from a closed loop?

What happens to the induced current when the magnetic field is removed from a closed loop?

Step 1: Understand that a closed loop can have a magnetic field passing through it.
Step 2: Know that when the magnetic field changes (like when it is removed), it creates a change in magnetic flux.
Step 3: This change in magnetic flux induces a current in the loop according to Faraday's law of electromagnetic induction.
Step 4: When the magnetic field is completely removed, there is no longer any change in magnetic flux.
Step 5: Since there is no change in magnetic flux, the induced current stops immediately.

Electromagnetic Induction – The principle that a changing magnetic field within a closed loop induces an electric current.
Faraday's Law of Induction – The law stating that the induced electromotive force (emf) in any closed circuit is equal to the rate of change of the magnetic flux through the circuit.