
Se liga - extra
Physics
12th Grade
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11 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pela secção reta de um condutor de eletricidade passam 48,0 C a cada minuto. Nesse condutor, a intensidade da corrente elétrica, em ampères, é igual a:
A) 0,80
B) 0,20
C) 5,00
D) 7,20
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a unidade de medida da corrente elétrica no Sistema Internacional de Unidades?
Volts
Ohms
Coulombs
Amperes
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a unidade de medida da resistência elétrica no Sistema Internacional de Unidades?
Amperes
Ohms
Watts
Volts
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Em um circuito paralelo, a corrente total é dada por:
A soma das correntes em cada resistor.
A média das correntes nos resistores.
A diferença das correntes nos resistores.
O produto das correntes nos resistores
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se dois resistores são ligados em série e suas resistências são 𝑅1 = 4 Ω 𝑅2 = 6 Ω, qual é a resistência equivalente?
2,4 Ω
10 Ω
1,5 Ω
12 Ω.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se dois resistores são ligados em paralelo e suas resistências são 𝑅1 = 5 Ω 𝑅2 = 5 Ω, qual é a resistência equivalente?
2,5 Ω
10 Ω
0,4 Ω
20 Ω
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se duas cargas possuem sinais opostos, a força entre elas será:
Atrativa
Repulsiva
Nula
Oscilante
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