Two parallel-plate capacitors have the same plate area, and the gap between the plates is filled with a dielectric with a dielectric constant equal to 6 . The gap in capacitor A is three times that in capacitor B. What is the ratio of the capacitance of A to B?
a. 1/3
c. 3
b. The ratio is not given.
d. 18
A
You might also like to view...
Conversion of Units: Your car gets 34.7 mi/gal on a vacation trip in the U.S. If you were figuring your mileage in Europe, how many km/L did it get? (3.79 L = 1.00 gal; 1.00 mi = 1.61 km)
A. 14.7 km/L B. 9.16 km/L C. 55.9 km/L D. 32.4 km/L
A proton (mass = 1.67 × 10?27 kg, charge = 1.60 × 10?19 C) moves from point A to point B under the influence of an electrostatic force only. At point A the proton moves with a speed of 60 km/s. At point B the speed of the proton is 80 km/s. Determine the potential difference VB?VA.
A. +15 V B. ?15 V C. ?33 V D. +33 V E. ?20 V
An ideal air-filled parallel-plate capacitor has round plates and carries a fixed amount of equal but opposite charge on its plates. All the geometric parameters of the capacitor (plate diameter and plate separation) are now DOUBLED
If the original energy density between the plates was u0, what is the new energy density? A) 16u0 B) 4u0 C) u0 D) u0/4 E) u0/16
Which of the following scientists is generally designated "the father of geology"?
a. Friedrich Mohs b. James Hutton c. Alfred Wegener d. Edwin Hubble