A step down transformer is used on a 1000 V line to deliver 20 A at 120 V at the…
Physics · Class 12 · CBSE — Alternating Current
A step down transformer is used on a 1000 V line to deliver 20 A at 120 V at the secondary coil. If the efficiency of the transformer is 80%, the current drawn from the line is
- 3 A
- 30 A
- 0.3 A
- 2.4 A
Answer
(A) 3 A
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