Voltage, ampere and symbols

 Voltage:

Current Flow 

Voltage, also known as electric potential difference, is the measure of the difference in electric potential between two points in an electric field. It represents the energy per unit charge required to move a charge from one point to another. Voltage is typically measured in volts (V).

Symbol

V: The symbol for voltage.

E: 

Sometimes used to represent electromotive force (emf), which is a type of voltage.

- ΔV: 

Represents the change in voltage or potential difference between two points.

U: 

Another symbol that can be used to denote voltage, especially in European .

Ampere:

The ampere, often shortened to "amp," is the base unit of electric current in the International System of Units (SI). It measures the amount of electric charge passing a point in an electric circuit per unit time. One ampere corresponds to one coulomb of charge passing through a given point per second.

Symbols:

A: 

The symbol for ampere.

I: 

The symbol commonly used to represent electric current in equations and circuit diagrams.