Chapter 4: Q5E (page 809)
A parallel-plate capacitor with circular plates is connected to a battery. (a) What is the charge on each plate? (b) How much charge would be on the plates if their separation were doubled while the capacitor remained connected to the battery? (c) How much charge would be on the plates if the capacitor were connected to the battery after the radius of each plate was doubled without changing their separation?
Short Answer
the charge on each plate is
if separation is doubled then the charge will be
the charge on the plates if the capacitor were connected to the battery radius of each plate was doubled without changing their separation is