Power: A series circuit has a 50-Hz ac source, a 60-? resistor, a 0.50-H inductor, and a 10-?F capacitor, as shown in the figure. The rms current in the circuit is 2.2 A. What is the power factor of the circuit?

A. 0.35
B. 0.33
C. 0.31
D. 0.30
E. 0.28


Answer: A

Physics & Space Science

You might also like to view...

The superposition of two waves,     and     ,results in a wave with a frequency of

A. 85 Hz. B. 170 Hz. C. 85? Hz. D. 340 Hz. E. 170? Hz.

Physics & Space Science

The sum of the forces exerted on a 1000-kg car while it is slowing down from 30 m/s to 15.9 m/s is 9500 N. How far does it travel while slowing down?

A) 34 m B) 31 m C) 37 m D) 41 m

Physics & Space Science

Starting with a sample of pure parent radionuclide, what would be the ratio of the parent radionuclide to its daughter after two half-lives have elapsed?

a. 1 to 1 b. 1 to 2 c. 1 to 3 d. 1 to 4

Physics & Space Science

New incandescent bulbs are more efficient than older types of incandescent bulbs

What will be an ideal response?

Physics & Space Science