
Eletricidade- 9º ano
Authored by Diana Alves
Physics
9th Grade
Used 75+ times

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19 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A corrente elétrica
é um movimento aleatório de cargas elétricas positivas e negativas.
mede-se em volt (V).
é um movimento ordenado de partículas com carga elétrica.
é um movimento ordenado apenas de eletrões.
2.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
A tensão elétrica mede-se com aparelhos chamados _____
3.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
A corrente elétrica mede-se com aparelhos chamados ______
4.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
A unidade SI de tensão elétrica é o _____
5.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
A unidade SI de corrente elétrica é o _____
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Podemos afirmar que:
O sentido convencional da corrente elétrica num metal é igual ao sentido real dos eletrões.
Uma lâmpada é uma fonte de energia elétrica.
12 mA correspondem a
12 000 A.
O brilho de duas lâmpadas num circuito elétrico é superior se estas forem associadas em paralelo em vez de o serem em série.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
O circuito elétrico tem
duas fontes de energia elétrica
o interruptor aberto
três recetores
duas lâmpadas associadas em série
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