Voltage

Voltage is the electric potential difference between two points, equal to the energy transferred per unit charge when charge moves between them. It is measured in volts.

Electric potential: Electric potential is electric potential energy per unit charge at a point in an electric field. Voltage is the difference in this quantity between two points.
Electric charge: Electric charge is a conserved physical property that causes electromagnetic interactions. Voltage is defined as energy transferred for each unit of charge.
Ohm's law: Ohm's law states that current through an ohmic conductor is proportional to voltage across it at constant temperature. It gives a direct relation between voltage, current, and resistance in simple circuits.
Electric potential energy: Electric potential energy is the energy a charge has because of its position in an electric field. Voltage is energy per unit charge, not the total energy of a particular charge.
Electric field: An electric field is a vector field that describes the force exerted on electric charges at each point. The field produces potential differences through work on charges.
Potential energy: Potential energy is energy associated with an object's position or configuration in a force field. Electric potential difference tracks changes in electrical potential energy per charge.
Voltage divider: A voltage divider is a circuit that produces an output voltage from a fraction of its input voltage. It uses component ratios to create a desired voltage from a supply.
Current density: Current density is electric current per unit cross-sectional area, represented as a vector field. It describes charge flow through space, unlike voltage’s energy difference per charge.
Electromotive force: Electromotive force is energy supplied per unit charge by a source, such as a battery, around a circuit. It is often confused with voltage, but describes energy supplied rather than a potential difference.
Conservation of energy: Conservation of energy is the principle that energy cannot be created or destroyed, only transferred or transformed. Voltage accounts for electrical energy transferred as charge moves through sources and components.

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