A capacitor C is connected in series with a resistor R across a battery and an open switch. If a second capacitor of capacitance 2C is connected in parallel to the first, the time constant of the new RC circuit will be
A) the same as before.
B) twice as large as before.
C) three times a large as before.
D) one-half as large as before.
E) one-fourth as large as before.
C
You might also like to view...
A 15-m rope is pulled taut with a tension of 140 N. It takes 0.545 s for a wave to propagate along the rope. What is the mass of the rope?
A) 1.7 kg B) 2.1 kg C) 2.8 kg D) 5.1 kg E) 3.2 kg
The largest component of municipal solid waste in the U.S. is
a. glass b. plastics c. paper d. yard waste e. metals
A 3 kg mass is positioned at (0, 8), and a 1 kg mass is positioned at (12, 0). What are the coordinates of a 4 kg mass which will result in the center of mass of the system of three masses being located at the origin (0, 0)?
A) (-3, -6) B) (-6, -3) C) (3, 6) D) (-12, -8)
The spacing between atoms in KCl crystal is 3.1 × 10^?10 m. At what angle from the surface will a beam of 2.23 × 10^?11-m x-rays be constructively scattered?
a. 30° b. 2.1° c. 0.11° d. 20° e. 64°