Current in the circuit

The current in the circuit represents the amount of electricity that passes through the cross-section of a conductor in one second. The current in the conductor is equal to one ampere if one coulomb of electricity passes through its cross-section every second.

The current can be determined in several ways. One such method is the Joule-Lenz law, which allows calculating the current consumed by an electrical appliance, knowing its voltage supply and power. Why it is necessary to know the value of the consumed current? As an example, you can consider calculating the rating of a fuse or selecting the cross-section of a wire during electrical wiring.

If the consumed power (W) and supply voltage (V), then in this case, you can use the online calculator available on our website. Besides entering these values into the online calculator, you also need to select the power supply network – single- or two-phase, and the type of load, which can be active or reactive. As a result of the calculations, we will get the current in the circuit, measured in amperes.

Such calculations help determine the current consumed by a washing machine, select the wire cross-section required to connect to a car's electrical wiring, and so on.