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AP EAMCET202125 Aug 2021Morning ShiftPhysicsElectromagnetic InductionActual

The self-inductance of two coils of a transformer is 20 mH and 30 mH . What is the resistance between them?

Options

  1. A0
  2. B1.5
  3. C600
  4. DInfinite

Correct answer

D. Infinite

Step-by-step solution

Transformers are built in such a way that both primary and secondary coils are well insulated from each other. Hence, resistance between them is considered to be infinite.

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