
Divisores de Tensão
Authored by Artur Triformis
Professional Development
12th Grade
Used 1+ times

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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a função principal de um divisor de tensão?
Multiplicar a tensão de entrada.
Dividir a tensão de entrada proporcionalmente às resistências.
Eliminar ruídos em circuitos eletrónicos.
Aumentar a potência num circuito.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Num circuito divisor de tensão com V_in=20V, R_1=4kΩ e R_2=6kΩ, qual é a tensão sobre R_2?
8V
10V
12V
15V
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se a resistência R_2 for zero (0Ω) num divisor de tensão, o que acontece?
Toda a tensão será aplicada a R_1.
A tensão será dividida igualmente entre R_1 e R_2.
Haverá um curto-circuito.
Nada acontecerá ao circuito.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Para V_in=18V, R_1=3kΩ e R_2=9kΩ, qual será a tensão sobre R_2?
4.5V
6V
13.5V
18V
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Num divisor de tensão, o que acontece se R_1=R_2?
Toda a tensão será aplicada a R_2.
A tensão será dividida igualmente entre R_1 e R_2.
V_out será o dobro de V_in.
O circuito não funcionará.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dado um divisor de tensão com V_in=24V, R_1=6kΩ e R_2=3kΩ, determine V_out sobre R_2:
6V
8V
12V
16V
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a principal desvantagem de usar divisores de tensão em circuitos de potência?
Não funcionam com resistências altas.
Dissipam energia sob a forma de calor.
Aumentam a corrente no circuito.
São incapazes de dividir tensão proporcionalmente.
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