How is inductance measured?

Inductance is a measure of the ability of a coil or circuit to store energy in a magnetic field when an electric current flows through it. This property is quantified in units called Henrys, named after the American inventor Joseph Henry. One Henry is defined as the amount of inductance that will produce a voltage of one volt when the current through the inductor changes at the rate of one ampere per second.

The other options relate to different electrical properties. Ohms are the unit of measurement for electrical resistance, Farads measure capacitance (the ability of a component to store an electrical charge), and Ampere-seconds is not a standard unit in electrical theory. Taking this into account, the correct understanding of inductance being measured in Henrys highlights its significance in circuit design and analysis, particularly for applications involving alternating current or electromagnetic fields.