
Elektromagnetska indukcija
Quiz
•
Physics
•
11th Grade
•
Practice Problem
•
Easy
A B
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16 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Faradayev zakon elektromagnetske indukcije tvrdi da je inducirana električna struja u strujnom krugu:
razmjerna magnetnoj indukciji B i obrnuto razmjerna intervalu vremena
razmjerna promjeni magnetnog toka Φ i obrnuto razmjerna intervalu vremena
razmjerna magnetnom toku Φ i intervalu vremena
obrnuto razmjerna magnetnom toku i intervalu vremena
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Inducirana električna struja u strujnom krugu:
uvijek je pozitivna (u smislu smjera)
uvijek je negativna
može biti pozitivna ili negativna
jednaka je nuli ako je interval vremena u kojem nastaje jako mali
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Što tvrdi Lenzov zakon?
Na naboj koji se giba u magnetskom polju uvijek djeluje sila.
Inducirana električna struja u strujnom krugu se uvijek suprotstavlja uzroku svog nastanka.
Dva vodiča kroz koja teče električna struja privlače se ili odbijaju.
Magnetni tok Φ računa se tako da pomnožimo površinu s kom ponentom vektora magnetne indukcije okomitom na površinu.
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
U stanovima je na raspolaganju izmjenični napon gradske mreže 220 V. To znači da je maksimalni napon raspoloživ za uporabu:
220 V
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
U kojem je vremenskom intervalu inducirani napon jednak nuli?
0 - 0,1 s
0,1 - 0,3 s
0,3 - 0,4 s
0 - 0,4 s
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Induciranu struju na krajevima zavojnice možemo smanjiti:
povećanjem brzine promjene magnetskog toka kroz zavojnicu
smanjenjem vremenskog intervala promjene magnetskog toka kroz zavojnicu
smanjenjem broja zavoja zavojnice
povećanjem magnetskog toka kroz zavojnicu
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Što transformira transformator?
snagu
struju
napon
magnetsko polje
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