
Quiz despre Legea lui Ohm
Quiz
•
Instructional Technology
•
9th Grade
•
Hard
NICOLETA RAMONA CORNELIA LAZĂR
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce enunță Legea lui Ohm?
Tensiunea este invers proporțională cu curentul.
Tensiunea este direct proporțională cu intensitatea curentului.
Curentul este constant în orice circuit.
Rezistența nu influențează curentul.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce reprezintă U în formula U = R * I?
Potențialul electric.
Rezistența electrică.
Tensiunea electrică.
Intensitatea curentului.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce caracterizează rezistența electrică R?
Nu are unitate de măsură.
Depinde de materialul conductorului.
Este constantă indiferent de temperatură.
Este întotdeauna mai mare decât 1.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce se întâmplă cu rezistivitatea electrică la creșterea temperaturii?
Scade.
Devine nulă.
Crește.
Rămâne constantă.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Care este formula pentru rezistența electrică în funcție de temperatură?
R = U / I
R = E / I
R = ρ * l / S
R = R0 (1 + αt)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce se întâmplă cu curentul electric într-un circuit deschis?
Curentul este constant.
Curentul variază.
Curentul este nul.
Curentul este maxim.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Care este formula pentru curentul de scurtcircuit?
Isc = R / E
Isc = R * I
Isc = E * r
Isc = E / r
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