Northeastern Apprenticeship and Training (NEAT) 3-1 Practice Test

Inductance is measured in henries, which directly reflects how effectively a coil or circuit can store electrical energy in a magnetic field when current flows through it. The henry (symbol: H) quantifies the relationship between the voltage across an inductor and the rate of change of current flowing through it. Specifically, one henry is defined as the amount of inductance where a change of one ampere per second induces one volt of electromotive force in the coil. This unit is named after Joseph Henry, who contributed significantly to the study of electromagnetic induction. Understanding inductance is crucial for various electrical engineering applications, including the design of inductors, transformers, and many types of circuits.