A transformer of a small electrical device takes an AC voltage of 220 V as its input and supplies 12.0 V to the device. The primary winding of the transformer has 3300 turns. When the device is operating, it consumes 5.0 W. What is the current taken from the 220 V line? Voltages are in RMS value

A 26 mA

B 23mA

C 18mA

D 17mA

Solution

Correct Answer: Option B

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