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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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