Basic Qualification · B-005 Basic electronics and theory · B-005-003-002
Quatre ampoules portent respectivement des indications de 40 watts, 50 watts, 60 watts et 100 watts. Laquelle consommera le plus d'énergie électrique?
- AL'ampoule de 40 watts
- BL'ampoule de 100 watts
- CL'ampoule de 60 watts
- DL'ampoule de 50 watts
Correct answer: B — L'ampoule de 100 watts. Question tirée de la banque officielle d'ISDE.
Why
The 100-watt bulb consumes energy at the highest rate because the wattage number printed on a light bulb directly tells you how much electrical power it uses every second. 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.
Drill B-005 — free, no account