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A conducting
circular loop of radius 20cm lies on the xy plane with center coinciding
with the origin. The magnetic field in the region is given by B=10cos377t
a<sub>z mT. Calculate the induced voltage in the loop. (3 Marks)
An electric
field is characterized by E=25cos(10⁸t + x) a_yV/m
in free space. What is the direction of propagation? Find . Sketch the
wave at t=0 and T/4. Find H. (3.5 Marks)
a) A parallel
plate capacitor has plates of area 2.5 mm<sup>2 and separated
by 0.5 mm and is filled with a dielectric of relative permittivity 15.
A cosine voltage wave of frequency 15GHz and amplitude 10V is applied
across the plates.  Find the displacement current through the capacitor
and D, the electric displacement in the capacitor(2.5Marks)

b) Find the frequency
at which the conduction current density and displacement

current density are equal
in a medium that has = 0.2mS/m and =81. (1 Mark)

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