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。

複選題1. A static charge distribution produces a radial electrical fieldwhere A and b are constants. Which are possible total charges Q?(A) 4TE0A(B) 2TE0A(C) 0(D) -2TE0A(E) -4TTE0A

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

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.

複選題8. Assume the wave guide is a perfect conductor, so that the boundary conditionsㆍ Given the general form determine which expressions are true?(A)(B) (C) (D)(E)

9. A spherical shell of radius R, carrying a uniform surface charge o, is set spinningat angular velocity .(A) The vector potential for r≤R(B) The vector potential for r≤R(C) The vector potential for r≤R(D) The magnetic field for r≤R(E) The magnetic field for r≤R