Class 10 Physics MCQs – Certification Test 89

Transformer Trivia (Question 89) – App & e-Book Download

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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:

0.08 A
0.05 A
0.02 A
0.01 A

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