What S The Voltage

For industrial machinery see industrial and multiphase power plugs and sockets some countries have more than one voltage available.

What s the voltage. V v i a r ω. The voltage v in volts v is equal to the current i in amps a times the resistance r in ohms ω. Voltage is the difference in charge between two points. This is known as ohm s law.

Voltage electric potential difference electric pressure or electric tension is the difference in electric potential between two points which in a static electric field is defined as the work needed per unit of charge to move a test charge between the two points. Amperes enter the maximum current in amps that will flow through the circuit. V or volts or voltage. It says that the current is equal to the voltage divided by the resistance or i v r.

Current is the rate at which charge is flowing. The power p in watts w is equal to the voltage v in volts v times the current i in amps a. For motors it is recommended to multiply the nameplate fla by 1 25 for wire sizing. Resistance is a material s tendency to resist the flow of charge current.

The voltage is equivalent to the water pressure the current is equivalent to the flow rate and the resistance is like the pipe size. Voltage enter the voltage at the source of the circuit. Current is the effect voltage being the cause. There is a basic equation in electrical engineering that states how the three terms relate.

Voltage also called electromotive force is the potential difference in charge between two points in an electrical field. In other words voltage is the energy per unit charge. The power p in watts w is equal to the voltage v in volts v times the current i in amps a. So when we talk about these values we re really describing the movement of charge and thus the behavior of electrons.

Single phase voltages are usually 115v or 120v while three phase voltages are typically 208v 230v or 480v. Mains electricity by country includes a list of countries and territories with the plugs voltages and frequencies they commonly use for providing electrical power to low voltage appliances equipment and lighting typically found in homes and offices. The greater the voltage the greater the flow of electrical current that is the quantity of charge carriers that pass a fixed point per unit of time through a conducting or semiconducting medium for a given resistance to the flow. In the international system of units the derived unit for voltage potential difference is named volt.

The voltage v in volts v is equal to the square root of the power p in watts w times the resistance r in ohms ω. Voltage also called electromotive force is a quantitative expression of the potential difference in charge between two points in an electrical field.