Rank the following five capacitors in the order of the energy they store
(a) a 20-µF capacitor with a 4-V potential difference between its plates
(b) a 30-µF capacitor with charges of magnitude 90 µC on each plate
(c) a capacitor with charges of magnitude 80 µC on its plates, differing by 2 V in potential,
(d) a 10-µF capacitor storing energy 125 µJ
(e) a capacitor storing energy 250 µJ with a 10-V potential difference
1.e > a > b > d > c
2.e > d > a > b > c
3.c > b > a > d > e
4.b > a = c > d = e
1
You might also like to view...
Photon A has an energy of 3.3 × 10^–19 J. Photon B has 4 times the frequency of Photon A. What is the energy of Photon B?
a. 8.3E–20 J b. 1.7E–19 J c. 1.3E–18 J d. 6.6E–19 J e. 5.3E–18 J
A person having a near point of 25 cm uses a magnifying glass with a focal length of 10 cm. What is the angular magnification of the glass for that person when her eyes are focused at infinity?
A) 1.5 B) 2.5 C) 3.5 D) 4.5
What is the escape velocity at the event horizon of a black hole?
A. half the speed of light B. supersonic speed C. speed of sound D. speed of light
How does the declination of the Sun vary over 1 year?