Energia electrica si puterea electrica
Quiz
•
Physics
•
8th Grade
•
Hard
Giurgea Gabriela
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7 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Expresia energiei electrice este:
W = U*I/Δt
E = U*I*Δt
W = U*I*Δt
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Unitatea de măsură a energiei electrice în SI este:
W
J
V
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Puterea electrică în SI se măsoară în:
J
W
A
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Expresia puterii electrice este:
P = W/Δt
P = W*Δt
P = U*I*Δt
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Un bec de 100W funcționează 3h. Care este energia electrică consumată?(în joule)
1 080 000J
300J
300 000J
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Care este rezistența unui aparat care consumă 396kj energie electrică în timp de 60 min. la tensiunea U = 220V?
44Ω
440Ω
220Ω
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Un conductor alimentat la o tensiune U = 24V, consumă în timp de 10 min o energie electrică W = 28,8KJ. Determină intensitatea curentului ce îl străbate și rezistența electrică a conductorului.
2A, 12Ω
0,2A, 12Ω
2A, 120Ω
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