III B.Sc.: Physics Semester V- Paper V Electricity, Magnetism and Electronics (Model Paper) 2017
https://www.computersprofessor.com/2017/10/iii-bsc-physics-semester-v-paper-v.html
III B.Sc.: Physics
Semester V
Paper V Electricity, Magnetism and Electronics (Model Paper) 2017
SECTION
– A
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I.
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Answer any
FIVE of the following questions:
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5
x 5 = 25 M
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1.
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Derive the relation among D, E and P.
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2.
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Derive expression for the potential due to
a point charge.
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3.
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What is Hall Effect
? Write the applications of Hall Effect.
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4.
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Derive an
expression for the self inductance of a long solenoid.
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5.
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Write the integral
an differential forms of Maxwell’s equations.
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6.
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Calculate the
resonance frequency of a LCR series circuit with a resistance 10W inductance 20 mH
and a capacitance of 0.02 mF.
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7.
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For a transistor a = 0.95 and its
emitter current is 1 mA. Find its base and collector currents.
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8.
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Convert following
Binary to Decimal.
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SECTION – B
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II.
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Answer ALL
of the following questions:
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5
x 10 = 50 M
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9.
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a)
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State and prove Gauss’s law.
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(OR)
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b)
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Explain the boundary conditions at the
dielectric surface.
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10.
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a)
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State and explain
Biot–Savart’s law. Derive an expression for the magnetic induction at a point
o the axis of a current carrying solenoid.
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(OR)
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b)
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Describe the
construction and working of a transformer. Explain its energy losses.
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11.
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a)
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Describe the
behaviour of series LCR circuit when an alternating voltage is applied to it.
Explain the condition for resonance.
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(OR)
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b)
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Derive the equation
of electromagnetic wave and hence determine the velocity of propagation of
electromagnetic wave in free space.
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12.
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a)
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What is transistor
? Explain the working of PNP and NPN Transistor.
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(OR)
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b)
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Explain the CE
characteristics of a Transistor.
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13.
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a)
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Explain the
functioning of a Half Adder and a Full Adder along with respective truth
tables.
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(OR)
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b)
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State and prove
Demorgan’s laws. Realize AND, OR and NOT gates from NAND logic.
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THE END