PH-1611
Transformers
Physics · Secondary 4 · Hard · Transformers
A step-down transformer has 1500 turns on its primary coil and 150 turns on its secondary coil. The primary is connected to a 230 V a.c. supply and the transformer is 100% efficient. If the current in the secondary is 2.0 A, what is the current in the primary?
- 0.020 A
- 0.20 A
- 2.0 A
- 20 A
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