Basic Qualification · B-005 Basic electronics and theory · B-005-001-007
Combien de mégahertz égalent 7040 kHz?
- A0,740 MHz
- B70,40 MHz
- C0,074 MHz
- D7,040 MHz
Correct answer: D — 7,040 MHz. Question tirée de la banque officielle d'ISDE.
Why
To change kilohertz to megahertz, you divide by one thousand because "kilo" means one thousand and "mega" means one million, so 7040 divided by 1000 equals 7.040. 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