Calculating Capacitance of Two Electrodes with Varying Distance

[StillAnotherDave]

Homework Statement

Finding the capacitance of two electrodes...

Relevant Equations

C=εA/d

Can I get some help in answering this questions?

As I understand, for two electrodes:

C=εA/d

A = 0.01² m²
d = 0.001 m on the left and d = 0.002 m on the right.

Thus the capacitance of each part is:

Left: C = (εx0.01²)/0.001

Right: C= (εx0.01²)/0.002

Firstly, is this the right approach? Secondly, what next? Do you simply add the two values to get the overall capacitance?

Help greatly appreciated!

 

[TSny]

Firstly, is this the right approach?

Yes

Secondly, what next? Do you simply add the two values to get the overall capacitance?

Follow the hint. Can you consider these two capacitances as being in parallel or series? If so, which one?

 

[StillAnotherDave]

To me, they look to be in parallel. Hence C = C₁ + C₂. Correct?

 

[TSny]

Yes. That's right.

 

[StillAnotherDave]

Great! Now if you can just turn your attention to my semi-infinite well question ...

Appreciate the help.