Parallel Plate Capacitors Video Lessons

Concept

Problem: Which of the following will increase the capacitance of a parallel-plate capacitor?Check all that apply.a) Increasing the area of the plates will increase the capacitance of a parallel-plate capacitor.b) Decreasing the area of the plates will increase the capacitance of a parallel-plate capacitor.c) Decreasing the separation between the plates will increase the capacitance of a parallel-plate capacitor.d) Increasing the separation between the plates will increase the capacitance of a parallel-plate capacitor.

FREE Expert Solution

For a parallel-plate capacitor, capacitance is:

$\overline{){\mathbf{C}}{\mathbf{=}}\frac{{\mathbf{\epsilon }}_{\mathbf{0}}\mathbf{A}}{\mathbf{d}}}$

Therefore, capacitance is proportional to the area of the plates, A.

Capacitance is inversely proportional to the separation between plates, d.

Therefore:

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Problem Details

Which of the following will increase the capacitance of a parallel-plate capacitor?

Check all that apply.

a) Increasing the area of the plates will increase the capacitance of a parallel-plate capacitor.

b) Decreasing the area of the plates will increase the capacitance of a parallel-plate capacitor.

c) Decreasing the separation between the plates will increase the capacitance of a parallel-plate capacitor.

d) Increasing the separation between the plates will increase the capacitance of a parallel-plate capacitor.