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  • Question

  • The number of turns in a coil is doubled. If initial time constant is T, the new time constant is


  • Options
  • A. T
  • B. 2T
  • C. 4T
  • D. The number of turns in a coil is doubled. If initial time constant is T, the new time constant is T

  • Correct Answer
  • 2T 

    Explanation
    When N is doubled, resistance becomes twice and inductance becomes four times.

    Since time constant is The number of turns in a coil is doubled. If initial time constant is T, the new time constant is T , time contant become twice.

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