What is the basic unit of inductance?

The basic unit of inductance is the henry. Inductance is a property of an electrical circuit that quantifies the ability of a conductor to induce an electromotive force (EMF) in itself or in another conductor due to a change in current. This phenomenon occurs as a result of electromagnetic induction, where a changing magnetic field generated by the current induces a voltage.

One henry is defined as the amount of inductance required to produce an electromotive force of one volt when the current through it changes at a rate of one ampere per second. This definition ties the concept of inductance directly to both current and voltage, highlighting the intimate relationship between these electrical properties.

The other units mentioned in the choices relate to different electrical quantities: the farad measures capacitance, the volt measures electric potential, and the ohm measures resistance. Each of these plays a distinct role in electrical circuits, but none captures the specific concept of inductance like the henry does. Thus, the correct identification of the unit of inductance as the henry is essential for understanding and working with inductive components in electrical engineering.