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What happens to the current in an RL circuit when the switch is closed?

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Question: What happens to the current in an RL circuit when the switch is closed?

Options:

  1. It instantly reaches maximum value
  2. It gradually increases
  3. It decreases to zero
  4. It remains constant

Correct Answer: It gradually increases

Solution: 

In an RL circuit, when the switch is closed, the current gradually increases due to the inductor\'s opposition to changes in current.

What happens to the current in an RL circuit when the switch is closed?

Practice Questions

Q1
What happens to the current in an RL circuit when the switch is closed?
  1. It instantly reaches maximum value
  2. It gradually increases
  3. It decreases to zero
  4. It remains constant

Questions & Step-by-Step Solutions

What happens to the current in an RL circuit when the switch is closed?
  • Inductance – The property of an inductor that opposes changes in current, causing the current to increase gradually when the switch is closed.
  • Time Constant – The time it takes for the current to reach approximately 63.2% of its maximum value in an RL circuit.
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