Purchase Solution

Potential Between Different Dielectric

Not what you're looking for?

Ask Custom Question

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.
Hence:

All is left now is to plug in the numbers, making sure all the units agree:

Thus:

Therefore:

Attachments
Purchase this Solution

Solution Summary

The potentials between the different dielectrics are determined. A system of two capacitors are provided.

Solution Preview

Attached

Since the potential between point a and b is the potential between the plates, when a capacitor is half filled with a different ...

Purchase this Solution


Free BrainMass Quizzes
Basic Physics

This quiz will test your knowledge about basic Physics.

Intro to the Physics Waves

Some short-answer questions involving the basic vocabulary of string, sound, and water waves.

Introduction to Nanotechnology/Nanomaterials

This quiz is for any area of science. Test yourself to see what knowledge of nanotechnology you have. This content will also make you familiar with basic concepts of nanotechnology.

Variables in Science Experiments

How well do you understand variables? Test your knowledge of independent (manipulated), dependent (responding), and controlled variables with this 10 question quiz.

Classical Mechanics

This quiz is designed to test and improve your knowledge on Classical Mechanics.