Question

A capacitor of capacitance 5 uF is connected to a 3.0 V battery. How much electrical potential energy is stored?


1.5 x 10-5 J

1.7 x 10-5 J

6.0 x 10-6 J

2.3 x 10-5 J

Answer 1

Use \[w _{c}=(1/2)CE ^{2}\]That will get you close enough.

Answer 2

Given
C=5microfarad=5*10^-6F
E=3 volt
Wc=?