A certain transformer doubles input voltage. If the primary coil has 10 A of current, then the current in the secondary coil is
A) 10 A.
B) 2 A.
C) 5 A.
D) 25 A.
E) none of these

Question

Quizplus · Accepted Answer

A transformer that doubles the voltage will halve the current in the secondary coil due to the conservation of power (assuming ideal conditions). Therefore, if the primary coil has 10 A, the secondary coil will have 5 A.

A Certain Transformer Doubles Input Voltage