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2 D 70333 .

Section B

Answer all questions in to or three sentences
Each question carries 2 ‏ہر‎ tithe

State and explain Faradays law.

Gi
1۷۶ the Maxwell’s equations in linear medium.
Define figure of merit of a moving coi] mirror 8818೧೦7700 What is its unit ?

Show graphically the relation between current and 6 m.f having a pure inductance Explain

What is j operator? Give one of its applications to A.c Circuits

State Maximum Power Transfer theorem. Give one of its applications.

State Kirchoffs laws in Network theory.
(7 x 2 = 14 marks)

Section C

Answer any five questions in paragraph of about a half a page to one page.
Each question carries 4 marks,

Find Neumann formula for Mutual induction.
Why Ampere Circuital law is to be modified ? How is it modified by Maxwell ?
What is radiation pressure due to electromagnetic field ? Find how it is related to intensity of the

wave,
Plot the graph showing the relation between charge and time in (a) Critically damped ; and

(b) Oscillatory discharge of a capacitor. Give the conditions in each case

An insulated wire has an iron core. An aluminium ring is slipped over the core so as to rest on the
top of the coil. If an alternating current is passed through the coil show that the coil will repel the

ring.
State Norton’s theorem and explain it with an example

Write down the real electric and magnetic field for a monochromatic plane wave of amplitude Ep,
frequency @ and phase angle zero that is travelling in the positive x direction and polarized in the

z direction.
(5 x 4 = 20 marks)