
Elektřina - výpočty - opakování
Quiz
•
Science
•
8th Grade
•
Hard
Vaclav Koplik
Used 2+ times
FREE Resource
16 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Vyber správné vzorce:
U = R . I
R = U . I
R = U:I
I = U:R
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ve vodiči je proud 2A a odpor 4Ω. Jaké je napětí?
6V
2V
8V
42V
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ve vodiči je proud 5A a 5V. Jaký je odpor?
25Ω
1Ω
10Ω
55Ω
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Jakou práci vykoná žárovka, když je pod napětím 5V, proudí ji proud 2A po dobu 2 sekund? Kolik Joulů? (napiš jen číslo)
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Co se nachází mezi elektrárnou a spotřebičem?
Dráty
Jističe
komín elektrárny
Zásuvka
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Co to je příkon?
Kolik práce vykoná spotřebič
Jakou má účinnost
Kolik vyrobí tepla
Kolik W je potřeba, aby spotřebič fungoval
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Práce u elektrického proudu - kdo tu práci vykonává?
Zdroj napětí
Spotřebič
Elektrony
Protony
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