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Transformer MCQs App Download & e-Book | 89

MCQ: 89

A transformer is designed to convert the voltage from 240 V a.c mains to 12 V, and has 4000 turns on its primary coil. If it is 100% efficient, and the current in the secondary coil was 0.4 A then the current in the primary coil should be

  1. 0.08 A
  2. 0.05 A
  3. 0.02 A
  4. 0.01 A

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