
Eletricidade- Circuitos Elétricos
Authored by Angelina Zélia Pinto Ferreira Ferreira
others
9th Grade
Used 4+ times

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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Observe com atenção o circuito seguinte:
O valor medido pelo amperímetro indicado pela seta é:
1,20V
0,40V
1,20A
0,40A
2.
MULTIPLE CHOICE QUESTION
45 sec • 5 pts
Os valores medidos pelos voltímetros 1 e 2 são, respetivamente:
4v e 2V
2v e 4V
10V e 6V
6V e 10V
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
O gráfico relativo ao comportamento de um material elétrico que respeita a Lei de Ohm é…
A
D
C
B
4.
MULTIPLE CHOICE QUESTION
45 sec • 5 pts
Segundo a Lei de Ohm, a resistência da lâmpada L1 é:
0,25 ohms
1,5 ohms
1 ohm
4 ohms
5.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Um reóstato é um componente elétrico com:
Resistência variável o comprimento de fio.
Resistência variável obedece a espessura do fio.
Resistência variável que depende do material de que é feito.
Resistência de valor fixo.
6.
MULTIPLE CHOICE QUESTION
30 sec • 4 pts
O efeito de Joule traduz:
O efeito magnético da corrente elétrica.
O efeito térmico da corrente elétrica.
O efeito químico da corrente elétrica.
Nenhuma das opções anteriores.
7.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
O efeito magnético da corrente elétrica:
relaciona-se com o aquecimento dos condutores.
está na base do funcionamento dos motores.
permite extrair metais dos respectivos minérios
ocorre apenas em eletroímanes.
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