- #1
TheCanadian
- 367
- 13
I was just looking through a few different solutions in Griffiths EM and I must have not realized it, but do bound and free charges both contribute to the overall electric field?
For example: when dealing with a capacitor with a dielectric between it, one of the solutions wants to find the capacitance through ##C = \frac{Q}{V}##. But looking through the solution, it states ## Q = \sigma_f A ##. Is there any particular reason the solution would neglect the bound charge as well in such a case? Don't both types of charges affect the total electric field and thus potential in the capacitor?
For example: when dealing with a capacitor with a dielectric between it, one of the solutions wants to find the capacitance through ##C = \frac{Q}{V}##. But looking through the solution, it states ## Q = \sigma_f A ##. Is there any particular reason the solution would neglect the bound charge as well in such a case? Don't both types of charges affect the total electric field and thus potential in the capacitor?