13_emf may 2013
TRANSCRIPT
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8/10/2019 13_EMF MAY 2013
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14.
(a)
With necessary
explanation, derive
tle Maxwell's
equation
in
differential
.
and integral
forms. (16)
Or
(b)
(i)
The cond4ction current flqwing
througJr
a
wire with
conductivity
o- 8x10' slmand the relative
permeability
a
=lis
given
by
I =Ssinot(mA).If d=IO8 rad./sec,ind the displacement, urrent.
(8 )
(ii)
An
eleetric field in a medium
which is source
free is
grven
by
.E
=
1.5cos
LO&t
&)a.V
I m .
Find B,H
and
D. Assume
r
=Ir / t r =
1rO
=
0.
(8)
15.
(a)
A
plane
sinusoidal
eleetromagnetic
wave traveling
in
space
D
- 1
u m d - - 5 O p V
l m
(i)
Find
the accompanying H^ ..
(ii)
Propagation
is in X direction
and H is
oriented in
Y direction.
What
is the
direction of
E?
(iii)
Compute the average
pewer
transmitted.
(b)
Explain in detail on
what
happens
when
the wave is incident
(i)
Normally onperfect conductor
(ii) Obliquely to the surface of perfect dielectrics.
has
(16)
(8)
(8)
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