Un transformateur avec un secondaire unique de 12 volts consomme 0,5 ampère sur son primaire de 120 volts. En supposant qu'il n'y ait aucune perte, quel est le courant débité au secondaire?

Why

With no losses, the power going into the transformer must equal the power coming out. The full explanation — and one for every question — is in Pro.

Practise this section

Basic electronics and theory is section B-005 of the Basic exam: The theory: Ohm's law, power, series and parallel circuits, AC and DC, frequency and wavelength, decibels, and the metric prefixes the exam leans on.

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