A resistor, an uncharged capacitor, a dc voltage source, and an open switch are all connected in series. The switch is closed at time t = 0 s. Which one of the following is a correct statement about this circuit?
A) The charge on the capacitor after one time constant is 1/e of its maximum value.
B) The voltage on the capacitor after one time constant is 1/e of the maximum value.
C) The voltage on this capacitor after one time constant is 100% of its maximum value.
D) The charge on the capacitor after four time constants is about 98% of the maximum value.
E) The charge on the capacitor after one time constant is 50% of its maximum value.
D
You might also like to view...
The law of universal gravitation is written F = GMm/r2. Why did we use the form F = mg when we studied projectile motion?
A. The first form is not valid for projectile motion. B. The first form does not work because it requires two masses. C. The first form is not valid near the surface of Earth. D. The second form is a good approximation to the first and much simpler to use.
When we add a displacement vector to another displacement vector, the result is:
a. a velocity. c. another displacement. b. an acceleration. d. a scalar.
An object is moving in a circular path with an angular speed of 1.52 rad/s. How long does it take the object to complete one revolution?
A) 4.13 s B) 2.07 s C) 118 s D) 4.77 s E) 8.26 s
The acceleration of objects due to the gravitational force exerted on them is lower on the Moon than on Earth. Which one of the following statements is true about the mass and weight of an astronaut on the Moon's surface, compared to Earth?
A) Mass is less, weight is the same. B) Mass is the same, weight is less. C) Both mass and weight are less. D) Both mass and weight are the same.