Calculate the energy stored in 20μF capacitor if the p...
Calculate the energy stored in 20μF capacitor if the potential difference between the plates is 40 V.
3.2 x10-2J
1.6x102J
8.0x10-4J
4.0x10-4J
2.0x10-4J
Correct answer is B
E = 1/2cv2 = 1/2 x 10 x 10-6 x 402 = 1.6 x 10-2J
The velocities of light in air and glass are 3.0 x10\(^8\)ms\(^{-1}\) and 1.8 \(\times \)10\(^8...
Which of the following radiations constitutes a stream of electrons? ...
Where can a man place his face to get an enlarged image when using a concave mirror to shave? ...
The energy stored in a simple cell is ...
A series RLC circuit is said to resonate, when ...