
Alalisvool
Authored by Nadezda V
Professional Development
Professional Development
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Juhi takistuse valem on:
R=p*l/S
R=p*l*S
R=p/l*S
R=p*l/S2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Alalisvoolu töö valem:
U=Q*R*t
A=I*U*t
A=U*R*t
A=Q2*R*t
3.
MULTIPLE SELECT QUESTION
45 sec • 3 pts
Alalisvoolu võimsust võib arvutada järgmiste valemite abil:
N=A/t
N=U*t
N=I2R
N=U2/R
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kui vooluallikas, mille sisetakistus on 1 Om klemmidega ühendada takistus R=2 Om, siis on ahelas voolutugevus I=2A. Milline on voolutugevus, kui välisahelas on takisti suurusega 1 Om?
1A
2A
3A
4A
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Elektritöö mõõtühik on:
J (džaul)
vattsekund (W s)
Amper (A)
W (vatt)
Volt (V)
6.
MULTIPLE SELECT QUESTION
45 sec • 2 pts
1 kilovatt-tund (kWh) võrdub:
3600 vattsekundit
3,6 vattsekundit
3,6 megavattsekundit (MWs)
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Takistuse sõltuvus temperatuurist. Valige õiged vastus(ed):
Temperatuuri tõus põhjustab metalljuhtide takistuse suurenemist.
Temperatuuri muutus ei mõju elektrijuhi takistusele.
Temperatuuri langemisega elektrijuhtme takistus tõuseb.
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