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Unformatted text preview: The Hashemite University Final Exam Electrical Engineering Department Electromagnetic I
First Sem. 06/07 Faculty of Engineering Instructors: Dr. Omar Saraereh Time: 2 hour
→ → Q1: Find a vector G whose magnitude is 4 and whose direction is perpendicular to both vectors E
→ → ∧ ∧ ∧ → ∧ ∧ and F , where E = x + y 3 − z 2 and F = y 3 − z 6 . (8 marks) Q2: A line of charge of uniform density ρ l occupies a semicircle of radius b as shown in Fig. 1.
Determine the electric field at the origin.
(10 marks)
Q3: The radii of the inner and outer conductors of a coaxial cable are 2cm and 5cm, respectively, and
the insulating material between them has a relative permittivity of 4. The charge density on the outer
conductor is ρ l = 10 −4 C / m . Calculate the total energy stored in a 20cm length of the cable.
(8 marks)
Q4: Determine the mutual inductance between the circular loop and the linear current shown in Fig 2.
(12 marks)
→ ∧ ∧ ∧ Q5: The plane boundary defined by z = 0 separates air from a block of iron. If B1 = 4 x − 6 y + 8 z in air (z ≥ 0),
→ find B2 in iron (z ≤ 0), given that μ = 5000 μ 0 for iron? Fig. 1 ( 12 marks) Fig. 2 www.Husni.Net ...
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This note was uploaded on 04/02/2012 for the course ENGINEERIN 110409221 taught by Professor Omarsarayra during the Spring '12 term at Hashemite University.
 Spring '12
 OmarSarayra
 Electromagnet

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