A parallel plate capacitor of capacitance C0 has plates of area A with separation d between them. When it is connected to a battery of voltage V0, it has charge of magnitude Q0 on its plates. It is then disconnected from the battery and the plates are pulled apart to a separation 2d without discharging them. After the plates are 2d apart, the magnitude of the charge on the plates and the potential difference between them are what?
A.
B.
C.
D.
E.
Answer: D
You might also like to view...
What is the mass-to-light ratio for the inner region of the Milky Way Galaxy, in units of solar masses per solar luminosity?
A) 1,000 B) 600 C) 100 D) 6 E) 0.1
The number of stars in the observable universe
A) is approximately equal to the population of the Earth at the turn of the 21st century B) cannot be estimated C) is approximately equal to the total number of sand grains on every beach on Earth D) is infinitely large
Carla and Jenny are arguing about whether or not it is possible to escape the gravitational field of the Earth. Carla shows Jenny a system where mass m is rE (not the Earth's radius) distant from Earth and rP (not planet P's radius) distant from planet P, the mass being on the line connecting the Earth and planet P. Carla states that the mass m has escaped if FP on m = ?FE on m. Jenny
disagrees. Which one, if either, is correct, and why? a. Carla, because the total gravitational force on m is zero at that point. b. Carla, because there is no gravitational force from Earth on m at that point. c. Carla, because there is no gravitational force on m from Earth when r > rE. d. Jenny, because there is a gravitational force on m from Earth no matter how great the distance from the Earth. e. Jenny, because the gravitational force from the Earth can only be blocked by a body that is larger than the Earth.
The maximum force that can be applied without breaking a material is called the breaking force
Indicate whether the statement is true or false