Inductance is measured in which unit?

Study for the MTA Electrical Test. Use our flashcards and multiple choice questions to prepare, each question includes hints and explanations. Achieve success on your exam!

Multiple Choice

Inductance is measured in which unit?

Explanation:
Inductance is about how much voltage is produced in response to a changing current in a coil. The unit used for this property is the henry. By definition, the induced voltage across an inductor equals the negative product of its inductance and the rate of change of current: V = -L(dI/dt). So if the current changes at 1 ampere per second and the inductance is 1 henry, the induced emf is 1 volt. That relationship also gives 1 henry as 1 volt-second per ampere, and it helps connect inductance to other electrical quantities. The other units correspond to different quantities: ohms for resistance, farads for capacitance, and watts for power.

Inductance is about how much voltage is produced in response to a changing current in a coil. The unit used for this property is the henry. By definition, the induced voltage across an inductor equals the negative product of its inductance and the rate of change of current: V = -L(dI/dt). So if the current changes at 1 ampere per second and the inductance is 1 henry, the induced emf is 1 volt. That relationship also gives 1 henry as 1 volt-second per ampere, and it helps connect inductance to other electrical quantities. The other units correspond to different quantities: ohms for resistance, farads for capacitance, and watts for power.

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