# What is the symbol of variable capacitor?

The capacitance C is the ratio of the amount of charge q on either conductor to the potential difference V between the conductors, or simply C = q/V.

## What is the symbol of variable capacitor?

arrow symbol
The arrow symbol indicates a variable capacitor (adjustable by the equipment user, and the T shaped diagonal indicates a preset capacitor, for technician adjustment only. The dotted line connecting a pair of variable capacitors indicates that they are ganged.

## What does C represent in capacitor?

The capacitance C is the ratio of the amount of charge q on either conductor to the potential difference V between the conductors, or simply C = q/V.

What does the schematic symbol for a capacitor looks like?

The symbol with one curved plate indicates that the capacitor is polarized. The curved plate usually represents the cathode of the capacitor, which should be at a lower voltage than the positive, anode pin. A plus sign should also be added to the positive pin of the polarized capacitor symbol.

### What is the schematic symbol of a variable resistor?

The variable resistor is represented by a zig-zag line and an arrow across (or above) it, like that shown in the figure below.

### How do you denote a capacitor?

(i) Capacitor Symbol: Its symbol consists of two parallel lines separated from each other i.e. Flat, curved or an arrow passes through it. The flat line indicates that the capacitor is non-polarized, the curved line indicates that the capacitor is polarized and arrow type indicates that it is of a variable type.

What are polarized capacitors?

A polarized capacitor is a capacitor that runs a voltage across it in a certain polarity. These capacitors must be connected in a certain way in a circuit. Aluminium electrolyte and tantalums are examples of polarized capacitors.

#### How do you use a variable capacitor?

Variable capacitors are often used in L/C circuits to set the resonance frequency, e.g. to tune a radio (therefore it is sometimes called a tuning capacitor or tuning condenser), or as a variable reactance, e.g. for impedance matching in antenna tuners.

#### What is E in capacitance?

The generalised equation for the capacitance of a parallel plate capacitor is given as: C = ε(A/d) where ε represents the absolute permittivity of the dielectric material being used. The dielectric constant, εo also known as the “permittivity of free space” has the value of the constant 8.854 x 10-12 Farads per metre.