
POTÈNCIA I ENERGIA
Authored by Fanny Pereto
Science
8th Grade
Used 9+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
La diferència de potencial entre dos punts també s'anomena.....
Voltaje
Volt
Potència
intensitat
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Quina intensitat de corrent circularà per un conductor de resistència 24 Ohms a l'aplicar-li un voltatge de 120 volts?
5 A
12 A
60 A
25 A
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
La resistència elèctrica facilita o dificulta el pas del corrent elèctric pels circuits?
FACILITA
DIFICULTA
CAP RESPOSTA ES CORRECTA
DIFICULTA I FACILITA
4.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
Quina unitat s'utilitza per mesurar la resistència? Quina és la seva abreviatura?
Volts i s'abrevia com a V
Ampers i s'abrevia com a A
Els ohms i s'abrevia com a Ω
La potencia i s'abrevia com a W
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Calcula la potència demandada per un forn elèctric amb una tensió de 160 volts i una intensitat de 15 ampers.
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Quants kw · h (energia) consumeixen 5 bombetes durant 5 hores/dia amb una potència de 100 w durant 40 dies?
50 Wh
65’9 kWh
30 kWh
100 kWh
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Amb una resistència de 14 ohms i un voltatge de 322 volts Quina intensitat de corrent circula per un conductor?
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