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PhysicsNEET 2021Transformers

Alternating Current

A step-down transformer connected to an ac mains supply of 220 V is made to operate an 11 V, 44 W lamp. Ignoring power losses in the transformer, what is the current in the primary circuit?

  1. A.0.2 A✓
  2. B.0.4 A
  3. C.2 A
  4. D.4 A

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