所屬科目：研究所、轉學考(插大)◆電磁學
1. Assuming that the electric field intensity is (V/m), find the total electric charge contained inside a spherical surface with a radius R and centered at the origin. (20 分)
(a) Assumingand the angle that makes with the interface.(10分)
(b) Assumingand the angle that makes with the interface.(10分)
4. Given that = 4 cos(10πx)sin(3π✖109t一βz)inair,find and β.(20分)
(b) What is the relative dielectric constant (εr) of the medium. (5 分)
(c) What is the wave impedance (η) of the medium.(5分)
(d) Find the corresponding -field.(5分)
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(V/m), find the total
electric charge contained inside a spherical surface with a radius R and
centered at the origin. (20 分)
and the angle that
makes with the interface.(10分)
and the angle that
makes with the interface.(10分)
= 4 cos(10πx)sin(3π✖109t一βz)
inair,find 
and β.(20分)
-field.(5分)