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MHT CET 2024 (15 May, Shift 1) · Self-Inductance & Energy

Self-Inductance & Energy question from MHT CET 2024 (15 May, Shift 1)

Q38MHT CET 2024 · 15 MAY · SHIFT 1Easy

Self-Inductance & Energy

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

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Answer: (a)

  1. L=μ0N2AlL = \dfrac{\mu_0 N^2 A}{l}; with ll and AA fixed, L∝N2L \propto N^2.
  2. N′=3N⇒L′=9LN' = 3N \Rightarrow L' = 9L
  3. So the answer is (a) 9 times.
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