Voltage Amperage

Voltage Vs Current

Voltage and current are two fundamental concepts in electrical engineering and physics. Although they are related, they have different meanings and properties.

What is Voltage and Current

Voltage, also known as electric potential difference, is the measure of the electrical energy between two points in an electrical circuit.

It is measured in volts and is represented by the symbol "V".

Voltage can be thought of as the force that drives the flow of electric charge, similar to how water flows through a pipe under pressure.

Voltage provides the energy necessary to move electrons through a circuit.

​​Voltage

Current is the measure of the flow of electric charge in an electrical circuit.

It is typically measured in amperes and is represented by the symbol "A".

Current can be thought of as the amount of charge that flows through a wire or component in a given amount of time.

​​Current

Difference between Voltage &Current

Feature	Voltage	Current
Definition	Measure of electric potential difference between two points in a circuit	Measure of the flow of electric charge in a circuit
Symbol	V	A
Unit	Volt	Ampere
Measured with	Voltmeter	Ammeter
Representation	V = IR (Ohm's Law)	I = V/R (Ohm's Law)
Relationship	Voltage drives current	Current flows due to voltage
Effect on circuit	Affects the amount of current that flows	Determines the amount of power consumed by the circuit
Properties	Can be positive or negative, can vary in magnitude	Always flows from positive to negative, must be conserved in a circuit