
Trabalho da força elétrica
Authored by margareth nunes
Physics
3rd Grade

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
-8 x 10^{-10}.
0,5 x 10^{-4}.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
3,0.10^6 V.
0,5.10^-3 V.
2,5.10^3 V.
10.10^{-4} V.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5,4 J.
4,5 J.
3,6 J.
2,7 J.
1,8 J.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Considere uma carga pontual (Q = +5 μC) imersa em um meio aquoso, sob um campo elétrico constante, conforme mostra a figura. Determine o trabalho realizado para deslocar essa carga do ponto A ao ponto C
2,5 • 10⁻⁴ J
3,3 • 10⁻⁴ J
4,2 • 10⁻⁴ J
5,8 • 10⁻⁴ J
6,7 • 10⁻⁴ J
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A figura mostra uma carga puntiforme fixa Q = 8 μC e dois pontos X e Y, no vácuo. Determine o trabalho da força elétrica para deslocar uma partícula eletrizada com carga q = 2,5 μC, do ponto Y ao ponto X. Dado: k₀ = 9 • 10⁹ N • m²/C².
+1,5 • 10⁻¹ J
-2,8 • 10⁻¹ J
+2,8 • 10⁻¹ J
-3,0 • 10⁻¹ J
+3,0 • 10⁻¹ J
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Duas partículas eletrizadas, Q_A = -6 nC e Q_B = +8 nC, estão fixas no vácuo, respectivamente, nos pontos A e B, e separadas por uma distância de 20 cm. Dada a constante eletrostática k₀ = 9 • 10⁹ N • m²/C², calcule o trabalho realizado pelas forças elétricas sobre uma carga puntiforme q = 1 nC, no deslocamento do ponto C para D.
1,8 • 10⁻⁷ J
2,3 • 10⁻⁷ J
3,4 • 10⁻⁷ J
4,2 • 10⁻⁷ J
5,0 • 10⁻⁷ J
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Uma carga pontual q = 5 nC, colocada no ponto X de um campo elétrico uniforme de intensidade 40 N/C, é deslocada até o ponto Y distante 60 cm de X. Calcule o trabalho realizado pela força elétrica nesse deslocamento.
1,2 • 10⁻⁷ J
1,3 • 10⁻⁷ J
1,4 • 10⁻⁷ J
1,5 • 10⁻⁷ J
1,7 • 10⁻⁷ J
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