For the last question I posted, the Key says the answer is 0.50 nF.
How do they get that answer?
P.S. I have Teflon being 2.1 and paper being 3.5
Since the potential between point a and b is the potential between the plates, when a capacitor is half filled with a different dielectric, then we can describe the system as two capacitors linked in a parallel. Both "new" capacitors have half the original plate area.
The first capacitor C1 is filled with air (air=1), while the other capacitor C2 is filled with paper (paper=1)
Therefore, the capacitors values are:
Since these capacitors are linked in parallel the total capacitance is the sum of the two capacitors.
Since the potential between point a and b is the potential between the plates, when a capacitor is half filled with a different ...
The potentials between the different dielectrics are determined. A system of two capacitors are provided.