What happens to the induced current in a coil if the magnetic field is suddenly

Practice Questions

Q1
What happens to the induced current in a coil if the magnetic field is suddenly removed?
  1. Induced current continues to flow
  2. Induced current stops immediately
  3. Induced current increases
  4. Induced current decreases gradually

Questions & Step-by-Step Solutions

What happens to the induced current in a coil if the magnetic field is suddenly removed?
  • Step 1: Understand that a coil can have an induced current when there is a changing magnetic field around it.
  • Step 2: Recognize that the induced current is created due to a change in magnetic flux through the coil.
  • Step 3: Know that magnetic flux is the amount of magnetic field passing through the coil.
  • Step 4: When the magnetic field is suddenly removed, the magnetic flux through the coil changes to zero.
  • Step 5: Since the change in magnetic flux is now zero, there is no longer any change to induce current.
  • Step 6: Therefore, the induced current in the coil stops immediately when the magnetic field is removed.
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