Calculate the energy stored in 20μF capacitor if the potential difference between the plates is…

Physics WAEC 1992

Calculate the energy stored in 20μF capacitor if the potential difference between the plates is 40 V.

  • 3.2 x10-2J
  • 1.6x102J checkmark
  • 8.0x10-4J
  • 4.0x10-4J
  • 2.0x10-4J

The correct answer is: B

Explanation

E = 1/2cv2 = 1/2 x 10 x 10-6 x 402 = 1.6 x 10-2J
Previous Question Next Question

Leave A Comment