A. Current
B. Voltage
C. Frequency
D. All of the above
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A. Current
B. Voltage
C. Frequency
D. All of the above
C. Frequency
A transformer is designed to change the voltage level of an alternating current (AC) electrical supply while maintaining the same frequency. The primary winding of a transformer is connected to an AC source of a certain voltage and frequency, and the secondary winding is connected to the load.
The transformer uses electromagnetic induction to transfer energy from the primary winding to the secondary winding, and in doing so, changes the voltage level. The current and voltage in the primary winding are directly proportional to the current and voltage in the secondary winding, and the frequency remains the same.