A capacitor is useful in
A) boosting the energy output of a circuit.
B) increasing the current in a resistor.
C) smoothing pulsed current.
D) changing dc to ac in a circuit.
E) increasing or decreasing voltage.
Answer: C
You might also like to view...
Which of the characteristics below describes the terrestrial planets?
A) having rings B) large and gaseous C) small, dark and icy D) possessing weak magnetic fields E) widely spaced through the outer solar system
An object 20-cm high is placed 50.0 cm in front of a lens whose focal length is 5.00 cm. Where will the image be located (in cm)?
a. 5.13 b. 5.56 c. 5.72 d. 5.93 e. 4.55
Which statement about Jupiter's rings is FALSE?
A) They are made of dark dusty particles. B) They lie in the planet's equatorial plane. C) They lie closer to Jupiter than Io's orbit. D) They are made of ice, like Saturn's. E) They may be made in part of material from Metis and Adrastea.
The Bohr theory does not predict that:
a. the approximate radius of a hydrogen atom is 5.3 × 10^-11 m. b. hydrogen atoms will give off the lines from the series ending in the n = 2 state. c. the ground state of hydrogen is spherically symmetric. d. it requires 13.6 eV to ionize hydrogen.