12th Class Physics Chapter 1 Notes

Important Easy to understand Notes of Physics of 12th Class Physics Chapter 1 Notes written by Professor Mr. Asad Abbas Suib. These notes are very helpful in the preparation of 12th Class Physics Chapter 1 Notes for students of the 12th class and these are according to the paper patterns of all Punjab Book Boards.

Summary and Contents:
Topics which are discussed in the notes are given below:
  • Important 12th class physics chapter 1 objective for Intermediate part-II students.
  • Definition of Electrostatics 
  • Definition of Electric charge
  • Definition of Kinds of charges with SI units
  • Important 12th class physics chapter 1 important questions for Intermediate part-II students.
  • How many electrons one Coulomb?
  • Definition of Electric force and Types of electric force
  • Definition of Repulsive force
  • Definition of Attractive force
  • Important 12th class physics chapter 1 question answer for Intermediate part-II students.
  • Basic law of electrostatics for knowing the nature of charge 
  • State and explain Colomb law. Discuss its vectorial form and give effect of medium on it.
  • This is mathematical form of Colomb law.
  • Vectorial form of Colomb law
  • Effect of medium on Colomb force
  • Important 12th class physics 1st chapter notes for Intermediate part-II students.
  • What is Electric field and electric field intensity? Derive its formula.
  • Electric field intensity due to a point charge q.
  • What are Electric field lines? Write its properties.
  • Important 12th physics chapter 1 notes for Intermediate part-II students.
  • Properties of Electric field lines
  • What is inkjet printer? Write principle and working.
  • Write A Note On Xerography?
  • Photocopier works on the following principle
  • Important 12th physics 1st chapter notes for Intermediate part-II students.
  • Main parts of photocopier
  • Define electric flux. Calculate the electric flux through a surface enclosing a charge
  • Electric flux through a surface enclosing a charge
  • State and prove Gauss’s law?
  • Important 12th Class physics chapter 1 notes pdf for Intermediate part-II students.
  • Applications of Gauss law
  • Definition of Gaussian Surface
  • Calculate the Intensity of field inside a hollow charged sphere?
  • Calculate the electric intensity due to an infinite sheet of charge.
  • Important 12th class physics chapter 1 exercise for Intermediate part-II students.
  • Calculate the electric intensity between two oppositely charged parallel plates.
  • What is Electric potential and potential difference? Write SI unit with formula.
  • What is Potential gradient? Derive its relation.
  • What is absolute potential? Calculate the Electric potential due to a point charge.
  • Important physics 1st chapter notes class 12th for Intermediate part-II students.
  • What is eV? Prove that 1eV=1.6 x 10^-19 J.
  • Write two similarities b/w electric force and gravitational force.
  • Write four differences b/w electric and gravitational force.
  • Describe experiment for finding the charge on electron by Millikan oil drop method.
  • What is capacitor? Calculate the capacitance of parallel plate capacitor.
  • Capacitance of parallel plate capacitor
  • Definition of Dielectric constant
  • What is electric polarization of dielectric and also define electric dipole.
  • What is the effect of polarization on capacitance of capacitor?
  • Calculate the energy stored in capacitor in terms of
  • Electric field.
  • Discuss charging and discharging of capacitor
  • Definition of Time constant
  • Definition of Discharging of capacitor
  •  Write the principle of working of windshield wipers of cars?
  •  If a surface encloses a positive as well as negative charge of same value. Then what is the value net flux?
  • Electric lines of force never cross. Why?
  • If a point charge of mass m is released in a non-uniform electric field with field lines in the same direction pointing, will it make a rectilinear motion?
  • Is E necessarily zero inside a charged rubber balloon if the balloon is spherical?
  • Is it true that Gauss’s law states that the total number of lines of force crossing any closed surface in the outward direction is proportional to the net positive charge enclosed within surface?
  • Compare magnitudes of electrical and gravitational forces exerted on an object (mass = 10.0g, charge = 20.0uC) by an identical object that is placed 10.0cm from the first.
  • In Millikan’s experiment, oil droplets are introduced into the space between two flat horizontal plates, 5.00 mm apart. The plate voltage is adjusted to exactly 780V so that the droplet is held stationary. The plate voltage is switched off and the selected droplet is observed to fall a measured distance of 1.50 mm in 11.2s.

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