Electricity produced in a generating plant passes through a large step-up transformer. This step-up transformer produces the high voltages needed to send electric power long distances across the countryside. Which of the following is transferred from the transformer's primary coil to its secondary coil while the transformer is operating?
A) Negative electric charges and power.
B) Positive electric charges, negative electric charges, and power.
C) Power alone.
D) Positive electric charges and power.

Question

Quizplus · Accepted Answer

Transformers transfer power (in the form of electrical energy) from the primary coil to the secondary coil without transferring electric charges (neither positive nor negative). The primary function of a transformer is to change the voltage level while conserving power (ideally), not to transfer electric charges.

Electricity Produced in a Generating Plant Passes Through a Large