複選題

1. A static charge distribution produces a radial electrical field

where A and b are constants. Which are possible total charges Q?
(A) 4TE₀A
(B) 2TE₀A
(C) 0
(D) -2TE₀A

(E) -4TTE₀A

複選題17. 下列何者比較屬於中長期規劃工作？ (A)大型設備採購 (B)產品國際銷售 (C)擴廠搬遷 計畫 (D)廠區工作指派 (E)耗材購買。

複選題18. 下列何者屬於外部招募方法？ (A)晉升考試 (B)校園徵才 (C)網路徵才 (D)員工推薦 (E)調職。

複選題19. 下列有關高階主管工作及任務之敘述，何者是正確的？ (A)花較多時間在指揮與控制的 工作上 (B)工作較偏向庶務性的工作 (C)負責設定組織目標與經營方針 (D)需要較多的 概念化能力，較少的技術性能力 (E)作為不同階層間之溝通橋樑。

複選題20. 以下何者為組織的無形資產？ (A)客戶資料 (B)廠房 (C)專利 (D)商譽 (E)設備。

2. If Pis the polarization vector and E is the electric field, then in the equation = , a in general are (A) Scalar (B) Vector (C) Tensor (D) Number (E) Matrix

3. Given that ▽ㆍF = D and ▽x F = C, which are true? (A) ▽.C=0 (B)▽.D=0 (C) ▽C=0 (D) ▽D =0 (E) F =▽U+▽XW 

複選題4. Suppose a point charge q is held a distance d above an infinite grounded conducting plane. Given that the conducting plane is the x-y plane and the point charge q is at (0, 0, d). (A) The potential on the conducting plane is constant. (B) The potential far away from the charge is 0. (C) An image charge q can be set at (0, 0, -d) to remove the conducting plane while still satisfying the same boundary conditions. (D) The induced charge on the conducting plane is O (E) The induced charge on the conducting plane is

複選題5. An uncharged metal sphere of radius R is placed in an otherwise uniform electric filed . The field will push positive charge to the northern (i.e., z＞ 0) surface of the sphere, leaving a negative charge on the southern surface. (A) The potential at r→∞ is 0. (B) The potential when r ＞＞ R (the radius of the sphere) is -E0rcosθ. (C) The potential inside the sphere is E0rcosθ. (D) The potential on the surface of the sphere is E0Rcosθ. (E) The induced charge density is -3E0E0cosθ.

6. Given that dipole moment and polarization . (A) (B)(C) (D) (E)

複選題7. Which are correct with the Poynting vector ? (A) is the energy per unit area and per unit time, transported by the electromagnetic fields. (B) is the electromagnetic force per unit area acting on a surface. (C) /c2 is the momentum current density transported by the fields. (D) /c2 is the momentum per unit volume stored in the electromagnetic fields. (E) /c2 is the work done on the charges by the electromagnetic force.