Two spherical-shell capacitors have inner radii a and outer radii b. the space between the plates in c1 is filled with air, and the space is filled with a dielectric with dielectric constant k for c2. They are connected to a battery of voltage e. Calculate the charge that appears on the inner plate of c1 and on the outer plate of c2 when it is fully charged.

Question

Two spherical-shell capacitors have inner radii a and outer radii b. the space between the plates in c1 is filled with air, and the space is filled with a dielectric with dielectric constant k for c2.  They are connected to a battery of voltage e. Calculate the charge that appears on the inner plate of c1 and on the outer plate of c2 when it is fully charged.

anonymous · Answer

Are the capacitors connected to the battery in parallel or in series ?

anonymous · Answer

In series.

anonymous · Answer

The inner plates are connected and the outer plates are connected.

anonymous · Answer

I can get the capacitance of the whole circuit, but am stuck as to where to go from there.

anonymous · Answer

I don't understand how the circuit is connected up, without a sketch.
If capacitors are connected in series each one has the same charge transfer.
You just need to know the capacitance of a spherical capacitor.

anonymous · Answer

Yeah, I realized I was making it harder than it needed to be.  They were in series, and once I figured out I was using the wrong equation it was easy.  Thanks for taking the time to help.

anonymous · Answer

no problem