Applied physics/Basic Electronics/Electronics BS Physics 1 Semester/Term University Of Sargodha (UOS) 2022

University of Sargodha

BS 1" Term Examination 2022

Subject: CS/IT

Paper: Applied Physics/ Basic Electronics (PHYS-101/PHY-2210)

Time Allowed: 02:30 Hours

30226

Maximum Marks: 60

Note:

Objective part is compulsory. Attempt any three questions from subjective part.

Objective Part

(Compulsory)

0.1.

Write shortinswers of the following in 2-3 lines each on your answer sheet

Ustade! what kind of energy is stored in a capacitor?

Caleilate the voltage across 2-ohm resistor where supply voltage is 10 V.

What is eddy current?

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(2*12)

V.IR

on type of the resistor?

Define the net charge on the Notspe material

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Is it meaningful to say that atom is ferromagnetic?

Write down the factors upon which self-inductance of the coil depends.

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ix.

Briefly explain the Photodiode.

What is full wave rectification.

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What is reverse saturation current?

Differentiate the regulated and unregulated power supplies.

Define Zener diode.

Subjective Part

(3*12)

(e) Find the a rating of the transistor shown in Figure. Hence determine the value of l using both a

and B rating of the transistor

(6)

Q.3.

Q.4.

Q.5.

14*12 mA

(b) What is transformer and how does it work? Write conditions for ideal transformer

(6)

(a) What are different methods of biasing? Discuss volage divider bias.

(6)

(b) Discuss the different types of capacitors.

(6)

Discuss band theory in detail. Also explain diamagnetism, paramagnetism and ferromagnetism. (12)

(a) Each of the resistors in the diagram has a resistance of 12 S2. Find the total resistance.

(6)

No Discuss Ohm's law of magnetism

(6)

..- LK-6025

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