What is a transformer?
A. A device that converts AC to DC
B. A device that stores electrical energy
C. A device that regulates electrical energy
D. A device that changes the voltage level of an alternating current
Answer:D
What is a transformer?
A. A device that converts AC to DC B. A device that stores electrical energy C. A device that regulates electrical energy D. A device that changes the voltage level of an alternating current