Author Question: Most of the waves in the electromagnetic spectrum are A) red light. B) blue light. C) green ... (Read 94 times)

laurencescou · **on:** Jul 29, 2018

Most of the waves in the electromagnetic spectrum are

A) red light.
B) blue light.
C) green light.
D) invisible.

Question 2

The principal advantage of ac power over dc power is that

A) more energy is dissipated during transmission.
B) ac voltage oscillates while dc voltage does not.
C) ac voltage can be transformed via conventional transformers.
D) ac circuits multiply power more easily.
E) ac circuits are safer.