In the case of having two plates of a capacitor, in the formula for capacitance C = (Epsilon)(A/d), is A the sum of the areas of each plate or just the area of one plate? And if it is the latter, then it can be assumed that both plates have the same area, right?
In the formula for capacitance, C = (Epsilon)(A/d), the variable A represents the area of one plate of the capacitor, not the sum of the areas of both plates. It is important to note that for a parallel plate capacitor, both plates usually have the same area. This symmetry allows for simplified calculations as the electric field between the plates is uniform.
To find the total capacitance of a parallel plate capacitor with two identical plates, you need to multiply the capacitance of a single plate by a factor of 2. This is because the total capacitance is a combination of the capacitance of each plate with respect to the other plate.
So, if you have the area of one plate, you can use that value directly in the formula for capacitance. The area of the other plate is assumed to be the same, allowing you to calculate the total capacitance.