
Test Curent Alternativ Sinusoidal
Quiz
•
Physics
•
1st - 10th Grade
•
Medium

Alexandru-Radu Belea
Used 7+ times
FREE Resource
4 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Inducția electromagnetică este fenomenul care constă în apariția unei tensiuni electromotoare într-un circuit electric, datorită variației în timp a fluxului magnetic (numit inductor) care străbate conturul circuitului.
Nu
Da
2.
MULTIPLE SELECT QUESTION
1 min • 1 pt
În ce se măsoară perioada unui semnal?
secundă (s)
Hertz (Hz)
metru (m)
amper (A)
3.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Ce se poate afirma despre frecvență? (mai multe variante de răspuns sunt posibile)
frecvenţa este egală cu inversul perioadei (f = 1 / T).
este o mărime adimensională
Unitatea de măsură pentru frecventă este Hertz-ul (prescurtat Hz)
Frecvența se măsoară cu voltmetrul
4.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Dacă perioada T=8 ms, calculați frecvența:
f=125 kHz
f=125 Hz
f=1,25 Hz
f=1,25 kHz
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