7. What is the energy in joules stored in the capacitor below?
The capacitor is shown with 10 volts on each side of it (plus on the left of the capacitor, - on the right), and C = 20 microfarads.
8. What is the energy in joules stored in the inductor shown below?
There is a drawing of an inductor with 7 A flowing to the right, and below is written 7 m H.
The energy U stored in a capacitor with capacitance C under potential drop V is given by:
U = 1/2 * C * V^2
In our case:
This solution provides calculations for finding the energy in a capacitor and inductor.