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JIPMER2012PhysicsAlternating Current

In an L-C-R circuit inductance is changed from L to L / 2 . To keep the same resonance frequency, C should be changed to

Options

  1. A2 C
  2. BC 2
  3. C4 C
  4. DC 4

Correct answer

A. 2 C

Step-by-step solution

v= 1 L C When L is changed to L / 2, C must be changed to 2 C to keep v same.

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