Electrocinetica
Quiz
•
Physics
•
10th Grade
•
Practice Problem
•
Hard
Lidia Rusu
Used 8+ times
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9 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Într-un conductor metalic solid, trecerea curentului electric este asigurată de:
protoni
electroni
ioni
electroni şi ioni
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Care este unitatea de măsură în SI pentru rezistivitatea electrică?
C
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Rezistenţa electrică a unui conductor, prin încălzire
creşte
scade
rămâne aceeaşi
devine nulă
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Rezistenţa echivalentă a 4 rezistoare identice grupate în paralel, având fiecare R= 20 , este:
80
20
5
15
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Intensitatea curentului la scurtcircuit este:
minimă
nulă
infinită
maximă
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Randamentul unui circuit în care R=r este:
75%
100%
50%
25%
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Mărimea fizică care poate fi exprimată prin produsul U I reprezintă:
sarcina electrică
tensiunea electrică
puterea electrică
energia electrică
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