Why in case of inductor the current changes instantly?

In an ideal inductor, the current cannot change instantly due to its fundamental property of opposing changes in current flow. When the current through an inductor attempts to change, it generates a back electromotive force (EMF) according to Faraday’s law of electromagnetic induction, which resists the change. This characteristic leads to a gradual change in current rather than an instantaneous one, as the inductor stores energy in its magnetic field during this process. However, in practical applications, the response may appear almost instantaneous due to the rapid switching speeds of electronic components.