Mr. Hemant Kumar Physics 12 DBK eClass

DBK eClass Physics 12 Mr. Hemant Kumar

DBK eClassPhysics 12 Mr. Hemant Kumar

DBK eClassPhysics 12 Mr. Hemant Kumar

> Physical contact is required> Charge of charged body isshared with uncharged body> uncharged body acquires samecharge as that of charge body

> Physical contact is NOT required> Charge of charged body is NOTshared with uncharged body> uncharged body acquiresOPPOSITE charge as that of chargebody

Methods of Charging

ii) Induction

i) Conduction

DBK eClassPhysics 12 Mr. Hemant Kumar

DBK eClassPhysics 12 Mr. Hemant Kumar

Electrostatics

DBK eClass Physics 12Mr. Hemant Kumar

Que 1: Can 8.6 X 10 C of charge be given to a conductor? Explain

Que 2: How many electrons are there in one coulomb of negative charge?

Electrostatics

DBK eClass Physics 12Mr. Hemant Kumar

Que 3: A body has a positive charge of 8 X 10 C. How much excess ordeficiency of electrons does body has?

Que 4: Explain the meaning of the statement “electric charge of a body isquantised “.

DBK eClassPhysics 12Mr. Hemant Kumar

DBK eClassPhysics 12 Mr. Hemant Kumar

DBK eClass Physics 12 Mr. Hemant Kumar

DBK eClass Physics 12 Mr. Hemant Kumar

DBK eClass Physics 12 Mr. Hemant Kumar

DBK eClass Physics 12 Mr. Hemant Kumar

DBK eClass Physics 12 Mr. Hemant Kumar

DBK eClass Physics 12Mr. Hemant Kumar

Numericals

Que 6: The dielectric constant of water is 80. What is its permittivity?

Que 5: What is the force between two small charged spheres havingcharges of 2 X 10 C and 3 X 10 C placed 30 cm apart in air?

Numericals

Que 7: The sum of two-point charges is 7µC. They repel each otherwith a force of 1N when kept 30 cm apart in free space. Calculate thevalue of each charge.

DBK eClass Physics 12Mr. Hemant Kumar