Doubling the potential across a given capacitor causes the energy stored in that capacitor to
A) reduce to one-half. B) double.
C) quadruple. D) reduce to one-fourth.
C
You might also like to view...
Alcohol is less dense than water. If alcohol is used to make a barometer at normal atmospheric pressure, the height of the alcohol column would be
A) less than 10.3 m. B) 10.3 m. C) more than 10.3 m.
On a clear night when an observer in Los Angeles sees a first quarter Moon an observer in London would see
a. a full moon. b. a first quarter moon. c. a new moon. d. a third quarter moon. e. any of the above, depends on the time
A woman who weighs 500 N stands on a 6.0-m-long board that weighs 100 N. The board is supported at each end. The support force at the right end is 3 times the support force at the left end. How far from the right end is the woman standing?
a. 4.8 m b. 2.1 m c. 1.7 m d. 1.2 m e. 3.9 m
In a velocity selector for ions, when the electric field is increased 50%, what change in the magnetic field is necessary to select the same speed as before?
A. a 50% decrease B. a 25% decrease C. no change D. a 25% increase E. a 50% increase