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PHY-2023-CG3-022
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PHY · PHY-2023-CG3-022
Physics
A 12 V, 60 W lamp is connected to the secondary of a step-down transformer, whose primary is connected to ac mains of 220 V. Assuming the transformer to be ideal, what is the current in the primary winding?
A
0.37 A
B
0.27 A
C
2.7 A
D
3.7 A
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