

Resistência e Circuitos Elétricos
Interactive Video
•
Physics, Science
•
8th - 12th Grade
•
Practice Problem
•
Hard
Ethan Morris
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a diferença de potencial entre os terminais de uma lâmpada com resistência de 100 ohms e corrente de 1,1 ampères?
110 volts
100 volts
90 volts
120 volts
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se uma lâmpada tem uma resistência de 100 ohms e é atravessada por uma corrente de 1,1 ampères, qual é a fórmula usada para calcular a tensão?
V = I^2*R
V = R*I
V = R/I
V = I/R
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a resistência de uma serpentina de aquecimento que opera com 5 ampères em uma linha de 220 volts?
50 ohms
40 ohms
44 ohms
55 ohms
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Para calcular a resistência de uma serpentina com 5 ampères e 220 volts, qual fórmula é utilizada?
R = V/I
R = I*V
R = V^2/I
R = I^2*V
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a corrente que circula por um forno de 240 volts com resistência de 24 ohms?
10 ampères
12 ampères
8 ampères
15 ampères
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se um forno tem uma resistência de 24 ohms e é alimentado por 240 volts, qual é a fórmula para calcular a corrente?
I = R/V
I = V^2/R
I = V*R
I = V/R
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O que acontece com a corrente em um circuito quando a resistência aumenta, mantendo a tensão constante?
A corrente aumenta
A corrente diminui
A corrente se torna zero
A corrente permanece a mesma
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