
Elektrodinamika
Authored by A B
Physics
10th Grade
Used 1+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
10 mins • 2 pts
Dvije žice valjkastog oblika načinjene su od istog materijala i imaju isti otpor. Ako je duljina druge žice dvostruko veća od duljine prve, tada je omjer površina njihovih presjeka jednak:
2.
MULTIPLE CHOICE QUESTION
10 mins • 3 pts
Dvije kružne petlje načinjene su od istog materijala i od žice iste duljine. Polumjer prve petlje je A, a druge 2A. Ako je otpor petlje polumjera A jednak R, tada je otpor petlje polumjera 2A jednak:
R/4
R/2
R
2R
4R
3.
MULTIPLE CHOICE QUESTION
10 mins • 2 pts
3,45 kW
3,45 W
15,7 kW
15,7 W
4.
MULTIPLE CHOICE QUESTION
10 mins • 2 pts
Dva vodiča, jedan otpora 10 Ω, a drugi 100 Ω, priključeni su na jednake napone. Kroz koji prolazi veća električna struja?
Onim od 10 Ω.
Onim od 100 Ω.
Teku iste električne struje.
Ne može se odgovoriti jer nije poznat napon.
5.
MULTIPLE CHOICE QUESTION
10 mins • 2 pts
Koja je od navedenih mjernih jedinica za električnu struju?
J/s
A/s
N/s
C/s
6.
MULTIPLE CHOICE QUESTION
10 mins • 3 pts
Kako se promijeni struja kroz bakrenu žicu ako na istu razliku potencijala priključimo bakrenu žicu jednake duljine početnoj, ali dvostruko manjeg polumjera?
struja se 2 puta smanju
struja se dva puta poveća
struja se 4 puta smanji
struja se 4 puta poveća
struja se ne mijenja
7.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Što mjerimo kad mjerimo u kWh?
struju
snagu
energiju
napon
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