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A6811 Pages: 2

PART C
Answer any two full questions, each carries10 marks.
State and explain Ampere’s circuit law.
A current filament carries a current of 10 A in the a, direction on the z axis.
Find # in rectangular system at point P(1,2,3) due to this filament if it extends
from a)z = - 10 + 0) 5 10 ൧.
Derive the expression of inductance of solenoid having N turns.
Explain the electric boundary conditions of two dielectric media.
Formulate the Maxwell’s equation in differential form and point form in phasor
form.
Explain the continuity equation.
PART D
Answer any two full questions, each carries 10 marks.
What is skin depth?
Show that the power flow along a concentric cable is the product of voltage and
current using Poynting Theorem.
Explain group velocity and phase velocity.
Derive the attenuation constant and phase shift constant for a perfect conductor.
Explain about electromagnetic interference.
A 9375 MHz uniform plane wave is propagating in polystyrene. If the
amplitude of the electric field intensity is 20 V/m and the material is assumed
to be loss less find a, B, A, intrinsic impedance, propagation constant and

amplitude of H.

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