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What is self-induction?

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Question: What is self-induction?

Options:

  1. Induction of EMF in a coil due to its own changing current
  2. Induction of EMF in a coil due to an external magnetic field
  3. Induction of current in a conductor due to a magnetic field
  4. Induction of voltage in a capacitor

Correct Answer: Induction of EMF in a coil due to its own changing current

Solution: 

Self-induction is the phenomenon where a changing current in a coil induces an EMF in the same coil.

What is self-induction?

Practice Questions

Q1
What is self-induction?
  1. Induction of EMF in a coil due to its own changing current
  2. Induction of EMF in a coil due to an external magnetic field
  3. Induction of current in a conductor due to a magnetic field
  4. Induction of voltage in a capacitor

Questions & Step-by-Step Solutions

What is self-induction?
Correct Answer: Self-induction is the phenomenon where a changing current in a coil induces an EMF in the same coil.
  • Step 1: Understand that a coil is a wire wound in a loop or spiral.
  • Step 2: Know that current is the flow of electric charge through the coil.
  • Step 3: Realize that when the current in the coil changes (either increases or decreases), it creates a changing magnetic field around the coil.
  • Step 4: Learn that this changing magnetic field can induce an electromotive force (EMF) in the same coil.
  • Step 5: Understand that this induced EMF can oppose the change in current, which is a key principle of self-induction.
  • Self-Induction – Self-induction is the phenomenon where a changing current in a coil induces an EMF in the same coil.
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