PH-1590
Transformers
Physics · Secondary 4 · Medium · Transformers
A transformer is used to step down a 240 V mains supply to 24 V for a device. The current in the primary coil is 0.50 A and the current in the secondary coil is 4.5 A.
What is the efficiency of the transformer?
What is the efficiency of the transformer?
- 90 %
- 45 %
- 80 %
- 110 %
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