
fenomene electrice si magnetice
Authored by dragostina radulescu
Physics
6th - 7th Grade
Used 16+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Polii unui magnet au fost denumiti polul nord ,respectiv polul sud al unui magnet ,deoarece :
orice magnet lasat liber se va orienta pe directia N-S geografica intotdeauna cu acelasi capat catre polul N geografic
polul N al unui magnet coincide cu polul N magnetic al pamantului
polul S al unui magnet se orienteaza catre polul S magnetic al pamantului
polii unui magnet se orienteaza pe oricare din directiile punctelor cardinale
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Polii unui magnet :
pot fi separati daca se taie magnetul longitudinal
nu pot fi separati
pot fi separati daca se taie magnetul transversal
pot fi separati daca se incalzeste magnetul
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Un circuit electric simplu trebuie sa contina cel putin urmatoarele elemente de circuit
sursa de curent , fire conductoare
fire conductoare , consumator
sursa de curent , fire conductoare , consumator
sursa de curent , intrerupator
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Curentul electric trece printr-un circuit electric daca :
circuitul este inchis
circuitul este deschis
elementele de circuit sunt confectionate din materiale conductoare
elementele de circuit sunt confectionate din materiale izolatoare
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In instalatiile electrice de iluminat se recomanda ca legarea becurilor sa se faca :
in serie
in paralel
mixt (serie si paralel)
alta modalitate
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Efectele curentului electric (termic , magnetic) depind de intensitatea curentului electric. Intensitatea curentului electric se masoara in :
volti
coulombi
amperi
newton
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ampermetrul, instrumentul utilizat pentru masurarea intensitatii curentului electric, se leaga intr-un circuit :
in serie
in paralel
la bornele sursei
la bornele consumatorului
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