Download list of faq questions in physics unit 1,2,3 three

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NOTE:The following questions have higher probability of repeatedly appearing in the
examinations.So it is advisable to give more attention to these FAQ questions and frequent
revisions.However a good student aspiring for centum in Physics is expected to study all the
questions .Completely ignoring the other questions is riskier.Practice these questions with
periodic revision.
LIST OF FAQ QUESTIONS IN PHYSICS UNIT 1,2,3
THREE MARK QUESTIONS
Unit 1
1. State the law of conservation of
electric charge?
2. Give an example for the law of
conservation of electric charge.
3. State Coulomb's law.
4. Define-one coulomb. (or) State and
define S.I. Unit of electric charge.
5. Define Electric Field intensity or
Electric Field strength at a point. Give
its expressions and unit.
6. What is an electric dipole?
7. What is meant by dipole moment?
Give its expression.
8. How does a microwave oven work?
9. Define - Electric potential difference
between two points.
10. State and define the unit of potential
difference.
11. Define - Electric potential at a point.
12. What is meant by equipotential
surface?
13. Define electric flux?
14. State Gauss's law.
15. Define-Capacitance. Give its
expression.
16. What is a non - polar molecule? Give
examples.
17. What is a polar molecule? Give
examples.
18. What are applications of capacitors?
19. What is meant by action of points or
corona discharge?name the devices
which use this principle.
Unit 2
1. What is meant by electromotive force
(EMF)? Is it a force?
2. Define - electric current. Give its
expression and unit.
3. Define drift velocity.
4. Define mobility. Give its expression and
unit.
5. Define Current - density. Give its
expression.
6. State Ohm's law.
7. What is conductance? Give its unit.
8. Define electrical resistivity (or) Specific
resistance. Give its unit.
9. What is electrical conductivity? Give its
unit.
10. What is meant by Superconductivity and
Superconductors?
11. Define - temperature co-efficient of
resistance. Give its unit.
12.
13.
14.
15.
16.
17.
18.
What is a thermistor?
State Kichoff's I law.
State Kirchoff's II law.
Compare EMF and potential difference
State Faraday's I law of electrolysis.
State Faraday's II law of electrolysis.
What are the applications of secondary
cells?
Unit 3
THERMAL EFFECT OF ELECTRIC CURRENT
1. State Joule's law.
2. Which substance is used as heating
element in electric heating devices?
Give reasons.
3. Thermal effect is undesirable. Give
examples.
4. What is Seebeck effect? What is meant
by thermocouple.
5.
6.
7.
8.
9.
10.
What is Neutral temperature?
What is temperature of inversion?
What is a Peltier effect?
Define Peltier co-efficient. Give its unit.
What is Thomson effect?
Define Thomson Co-efficient. Give its
Unit.
MAGNETIC EFFECT OF ELECTRIC CURRENT
1.
2.
3.
4.
5.
6.
Give Maxwell's Right hand cork screw rule.
State Biot-Savart law.
State Amperes circuital law.
What is Right hand palm rule?
What is End rule?
What is magnetic lorentz force.? Give its
expressions.
7. What are the limitations of Cyclotron?
8. Define
Current
sensitivity
of
galvanometer.
9. Define
Voltage
sensitivity
of
galvanometer.
FIVE MARK QUESTIONS
UNIT 1
1. What is an electric line of force?
Explain its properties.
2. Derive an expression for the torque
experience by an electric dipole placed
in a uniform electric field.
3. Derive an expression for electric
potential at a point due to a point
charge.
4. Explain the principle of a capacitor.
5. Derive the expression for effective
capacitance when capacitors are
connected in series.
6. Derive the expression for effective
capacitance when capacitors are
connected in parallel
7. Derive an expression for the energy
stored in a capacitor.
a
a
8. Derive an expression for the electric
field due to an infinite plane sheet of
charge.
9. Derive an expression for the electric
field due to two parallel sheets of
charge.
UNIT 2
1. Derive an expression for the drift
velocity.
2. Derive the relation between the
current and drift velocity.
3. Derive Ohm's law. Explain the various
aspects of Ohm's law.
4. Write a note on superconductivity.
5. Derive an expression for the
equivalent resistance or effective
resistance of resistances (i) in series (ii)
in parallel.
6. State and explain Kirchoff's I law.
7. State and explain Kirchoff's II law.
8. Derive the condition for bridge balance
in wheatstone's bridge.
9. Explain the principle of potentiometer.
10. Explain how the emf's of two given
cells
are
compared
using
potentiometer.
11. Explain how Faraday's laws of
electrolysis
are
experimentally
verified.
12. Explain the construction and working
of voltaic cell.
13. Explain the construction and working
of Daniel cell.
14. Explain the construction and working
of Lechlanche cell.
15. Explain construction and working of
Lead Acid accumulator.
UNIT 3
THERMAL EFFECT OF ELECTRIC CURRENT
1. Explain how Joule's law is experimentally verified.
2. Explain about Neutral temperature and inversion temperature.
MAGNETIC EFFECT OF ELECTRIC CURRENT
1. Explain about magnetic lorentz force.
2. Explain the motion of a charged
particle in a uniform magnetic field.
Deduce the expressions for angular
frequency and period.
3. Derive an expression for the force
between two long parallel current
carrying conductor. Hence define
ampere.
4. Explain how a galvanometer can be
converted into an ammeter.
5. Explain how a galvanometer can be
converted into a voltmeter.
TEN MARK QUESTIONS
UNIT 1
1. Derive an expression for the electric
field at a point on the axial line of an
electric dipole.
2. Derive an expression for the electric
field at a point on the equatorial line
of an electric dipole.
3. Derive an expression for electric
potential at a point due to an electric
dipole.
4. Derive an expression for the
capacitance of a parallel plate
capacitor.
5. Explain the construction and working
of Van de Graff Generator.
UNIT 3
1. Derive an expression for the magnetic
induction due to an infinitely long straight
conductor carrying current.
2. Derive an expression for the magnetic
induction along the axis of a circular coil
carrying current.
3. Explain the construction and working of
tangent galvanometer.
4. Explain the construction and working of
Cyclotron. Give their limitations.
5. Derive an expression for the force acting
on a current carrying conductor placed in
a magnetic field.
6. Explain the construction and working of
moving coil galvanometer.
7. Derive an expression for the magnetic
dipole moment of a revolving electron.