What is the unit of inductance?

The unit of inductance is the henry. Inductance is a property of an electrical component, typically a coil or inductor, that quantifies its ability to store energy in a magnetic field as current flows through it. Specifically, one henry is defined as the inductance in which a change of current of one ampere per second results in an electromotive force (EMF) of one volt. This relationship highlights how inductance relates to the flow of current and the resulting magnetic fields.

The henry is a fundamental unit in the International System of Units (SI) and is critical in understanding circuits that include inductive components, such as transformers and motors. It plays an essential role in AC circuit analysis, where inductance affects impedance and phase relationships between voltage and current.

The other units listed—coulomb, farad, and ohm—represent different electrical properties: the coulomb is a unit of electric charge, the farad is a unit of capacitance, and the ohm is a unit of resistance. Each of these units pertains to distinct electrical characteristics and phenomena, making the henry uniquely significant when discussing inductance.