State the expression for the capacitance of a parallel-plate capacitor

1.	State the expression for the capacitance of a parallel-plate capacitor filled with a dielectric. Explain how its capacitance can be increased.
Answer» The capacitance of a parallel-plate capacitor filled with a dielectric is C = \(\cfrac{Akɛ_o}d\) where A is the area of each plate, k is the relative permittivity (dielectric constant) of the medium between the plates, ε₀ is the permittivity of free space and d is the uniform plate separation. The capacitance of a parallel-plate capacitor can be increased by 1. increasing the area of each plate 2. decreasing the distance between the two plates 3. filling the space between the two plates by a medium of greater relative permittivity.

State the expression for the capacitance of a parallel-plate capacitor filled with a dielectric. Explain how its capacitance can be increased.

Answer»

The capacitance of a parallel-plate capacitor filled with a dielectric is C = \(\cfrac{Akɛ_o}d\)

where A is the area of each plate, k is the relative permittivity (dielectric constant) of the medium between the plates, ε₀ is the permittivity of free space and d is the uniform plate separation.

The capacitance of a parallel-plate capacitor can be increased by

1. increasing the area of each plate

2. decreasing the distance between the two plates

3. filling the space between the two plates by a medium of greater relative permittivity.

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