A step-up transformer steps up voltage by ten times. Neglecting slight losses, if 100 W of power go into the primary coil, the power coming from the secondary coil is
A)1 W.
B)10 W.
C)100 W.
D)1000 W.
E)none of the above

Question

Quizplus · Accepted Answer

The power output of a transformer (neglecting losses) is equal to the power input. Therefore, if 100 W of power go into the primary coil, 100 W of power will come out of the secondary coil, regardless of the voltage change.

A Step-Up Transformer Steps Up Voltage by Ten Times