Quelle est la puissance d'entrée d'un émetteur qui consomme un courant de 500 milliampères sous 12 volts CC?

Why

To find the power, multiply the voltage by the current, but first convert milliamperes to amperes by dividing by one thousand, turning 500 milliamperes into 0.5 amperes. 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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