π Key Concepts
β’ Basic electrical units and what they measure: voltage, current, resistance, energy, charge, inductance
β’ Common SI units in electricity: volt, ampere, ohm, joule, coulomb, henry
β’ Relationship between inductance and a coil in a circuit (how it resists change in current)
π Think About
β’ First, match each choice to what physical quantity it normally measures. For example, which one is energy, which is electric charge, which is resistance, etc.?
β’ Think about where inductors appear in DC/AC circuits and what symbol (L) they use. What SI unit is paired with that symbol in textbooks or circuit diagrams?
β’ Eliminate any options that you know belong to other quantities, then see which remaining unit is associated with inductance.
β
Before You Answer
β’ Be sure you know: Joule = unit of energy, Coulomb = unit of electric charge, Ohm = unit of electrical resistance
β’ Confirm which SI unit is specifically defined for inductance in basic electronics references.
β’ Before choosing, double-check that the unit you pick is NOT already βtakenβ by a more basic quantity like charge, energy, or resistance.