11. A charge q sits at the back corner of a cube, as shown in the right figure. The length of the edge of the cube is L. The permittivity constant is ε₀. What is the flux of electric field through the shaded surface of the figure? (A) (B)(C)(D)(E)

11. A charge q sits at the back corner of a cube, as shown in the right figure. The length of the edge of the cube is L. The permittivity constant is ε₀. What is the flux of electric field through the shaded surface of the figure?

(A)
(B)
(C)
(D)
(E)

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統計： 尚無統計資料

詳解 (共 1 筆)

助人為本

B1 · 2026/07/16

#7445780

所以如果看到電荷在立方體角落

問對稱陰影面的電通量

我們直接把電場電通量分成8份

所以除以8

8對應8個三角形區域

ㅤㅤ

16. Consider two observers A and B sit on two trains Tₐ and TB, respectively. These two trains have the same proper length. If Tₐ stays in a station and TB moves with a velocity v with respect to the station. When they overlap in the station, which one of the following statements is correct? (A) The observer A finds that Tₐ is shorter than TB, but the observer B finds that TB is shorter than Tₐ. (B) The observer A finds that TB is shorter than Tₐ, but the observer B finds that Tₐ is shorter than TB. (C) Both A and B find that Tₐ is shorter than TB. (D) Both A and B find that TB is shorter than Tₐ. (E) Both A and B find that TB and Tₐ have the same length.

11. A charge q sits at the back corner of a cube, as shown in the right figure. The length of the edge of the cube is L. The permittivity constant is ε₀. What is the flux of electric field through the shaded surface of the figure?

(A)
(B)
(C)
(D)
(E)

詳解 (共 1 筆)

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