AC circuits

Question 1

What is an alternating current

Answer 1

Flow of electric charge periodically reverses direction

Question 2

Define root mean square value of an alternating current

Answer 2

Value of the steady direct current that dissipates heat energy in a resistor at the same average rate as that is dissipated by the alternating current

Question 3

When can the formulas for RMS be used

Answer 3

Sinusoidal ac only

Question 4

What are the formulas for rms

Answer 4

I(rms) = I/sqrt2
V(rms) = V/sqrt2
Mean P = P/2

Question 5

What is an ideal diode

Answer 5

Direction of arrow indicates direction of conventional current that is allowed to pass through