
Teste Potência
Authored by Daniel Figueiredo
Education
Professional Development
Used 6+ times

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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Possuo dois aparelhos de 100W. Um que funciona a 12V e outro a 200V.
Qual dos dois transforma mais energia?
O de 12V
O de 200V
Ambos transformam a mesma quantidade
O de 200 V se trabalhar durante o mesmo tempo
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Possuo dois aparelhos de 100W. Um que funciona a 12V e outro a 200V.
Qual dos dois é percorrido por uma corrente elétrica superior?
O de 12 V
O de 100V
Ambos são percorridos pela mesma intensidade de corrente.
A corrente elétrica que os percorre é independente da tensão
3.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Qual a corrente elétrica que percorre um aparelho de 100W ligado a uma tensão de 20V?
4.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Qual a potência de um aparelho que trabalha com uma tensão de 100 V e é percorrido por 3 A?
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Assinala as fórmulas erradas.
P = U x I
P = R x I
U = P x I
6.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Qual o valor mínimo do fusível para proteger um circuito que alimenta um recetor de 120 W ligado a 12 V
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Um carro possui um circuito protegido com um fusível de 6 A.
Sabendo que o veículo trabalha a 12 V indica o valor máximo da potência total das lâmpadas que posso ligar nesse circuito.
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