A 12.5 nF capacitor is fully charged by a 12 V source.
a) What is the charge on the capacitor?
b) What is the energy stored in the capacitor.
Now the charged capacitor is disconnected from the source and a dielectric, porcelain, is placted between the plates.
c)What is the new capacitance?
d) What is the new charge on the plates?
e) What is the new potential across the plates?