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MHT CET202415 May 2024Morning ShiftPhysicsElectromagnetic InductionActual

When the number of turns in a coil are made 3 times without any change in the length of the coil, its self inductance becomes

Options

  1. A(1.5) times
  2. Btwo times
  3. Cthree times
  4. Dnine times

Correct answer

D. nine times

Step-by-step solution

- Formula: Self-inductance L of a coil is proportional to the square of the number of turns ( N^2 ). - Calculation: If the number of turns N is tripled, the new self-inductance becomes (3 N)^2=9 N^2 . This means the self-inductance becomes nine times the original.

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