The efficiency of all transformers is very low (less than 10%).

If more turns of wire are added to a coil and then that coil is moved through a magnetic field, the voltage produced will ________.

A series circuit is connected to a 200-volt voltage source with three resistors. One resistor drops 25 V and another resistor drops 100 V. What is the voltage drop across the third resistor?

What is a common application of transistors?

It takes a capacitor 5 time constants to nearly reach full charge.

If the inductance increases in an RL filter circuit, the cutoff frequency increases.

What is a disadvantage of semiconductors?

Only the number of turns in the primary and secondary of a transformer determines the actual secondary voltage.

The total resistance in a parallel circuit is ____.

The cemf is out of phase with the applied voltage by ____ degrees and opposes the applied voltage.