A transformer is based on a principle of
A) self inductance.
B) direct current.
C) alternating current.
D) mutual inductance.
E) energy conservation.

Question

Quizplus · Accepted Answer

A transformer is based on the principle of mutual inductance, where a changing current in one coil induces a voltage in a neighboring coil, which in turn can be used to transform the voltage level up or down. This is the principle behind the operation of power transformers used in power transmission and distribution. Self inductance and direct current are not directly related to the operation of a transformer, while alternating current is necessary for the transformer to work. Energy conservation is a fundamental principle in physics but not directly related to the operation of a transformer.

A Transformer Is Based on a Principle of