Capacitor

_____ is a component that has the ability or “capacity” to store energy in the form of an electrical charge producing a potential difference (Static Voltage) across its plates, much like a small rechargeable battery.

• resistor

• capacitor

• transformer

• integrated circuit

The property of a capacitor to store charge on its plates in the form of an electrostatic field is called the _____.

• resistance

• capacitance

• inductance

• regulator

In a capacitor, in the area of the two conductive plates which make up the capacitor, the larger the area the lesser the capacitance.

• TRUE

• FALSE

Electrolytic capacitors are widely used due to their low cost and small size but there are ways that may lead to their failure. Over Temperature or excessive heat dries out the electrolytic and shortens the life of an electrolytic capacitor.

• TRUE

• FALSE

In a capacitor, in the distance between the two plates, the smaller the distance the lesser the capacitance.

• TRUE

• FALSE

In a capacitor, the type of material which separates the two plates called the “dielectric”, the higher the permittivity of the dielectric the lesser the capacitance.

• TRUE

• FALSE

Electrolytic capacitors are widely used due to their low cost and small size but there are ways that may lead to their failure. Overvoltage or excessive voltage will cause current to leak through the dielectric resulting in a short circuit condition.

• TRUE

• FALSE

This type of capacitor uses polystyrene, polycarbonate, or Teflon as their dielectrics are sometimes called “Plastic capacitors”.

• film capacitors

• ceramic capacitors

• electrolytic capacitors

• none of these choices

This type of capacitor is made by coating two sides of small porcelain or ceramic disc with silver and are then stacked together to make a capacitor.

• film capacitors

• ceramic capacitors

• electrolytic capacitors

• none of these choices

This type of capacitor is made using a very thin metallic film layer for one of the electrodes, a semi-liquid electrolyte solution in the form of jelly or paste is used which serves as the second electrode (usually the cathode).

• film capacitors

• ceramic capacitors

• electrolytic capacitors

• none of these choices