compared to air

21. Write the definition for the term "dielectric" as applied to capacitors.

k

The

insulating 22. The capacity of a capacitor depends on tree factors:

material

which

separates the plates.

(1) The dielectric constant of the dielectric (k).

(2) The area of the plates (A) in square inches.

(3) The distance (the thickness of the dielectric material) between the plates (d).

The capacity of a capacitor is determined at the time of manufacture by the actual

physical construction of the capacitor, and with the exception of variable capacitors

(which normally use air or mica as the dielectric), the capacity cannot be changed.

Three factors which determine the capacity of a capacitor are:

(1) The dielectric constant (k).

(2)

(3)

(2) Plate area (A).

23. The relationship of the three factors which determine the capacity of a capacitor can

be seen by using the formula:

(3) Distance between

plates (d).

List the three factors which determine the capacitance of a capacitor.

(1)

(2)

(3)