Question

There are two basic types of capacitors: fixed and variable. Fixed capacitors have a fixed capacitance value; that is, the capacitance value can't be changed. However, the capacitance of a variable capacitor can be changed.

A) True
B) False

Answer 1

True, there are fixed and variable capacitors. Fixed capacitors cannot change their capacitance value, while variable capacitors' capacitance can be adjusted. Capacitance depends on physical characteristics and the insulating material used.

Step-by-step explanation:

The statement that there are two basic types of capacitors: fixed and variable, is true. Fixed capacitors have a set capacitance value, which means it cannot be adjusted, while the capacitance of a variable capacitor can be changed. The capacitance of a capacitor, measured in farads, indicates how much charge the capacitor can store per unit voltage applied across its plates. This storage capability is affected by physical characteristics such as size and the geometry of the plates as well as the electrical properties of the insulating material between them.

Capacitors in Series and in Parallel

When capacitors are connected in series or parallel, the total capacitance of the combined capacitors differs from the capacitance of the individual capacitors. For series connections, the reciprocal of the total capacitance is the sum of the reciprocals of the individual capacitances. In parallel connections, the total capacitance is the sum of the individual capacitances. This allows for flexibility in designing circuits with specific capacitance requirements.