Mr. Hemant Kumar Physics 12 DBK eClass

DBK eClass Physics 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



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


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








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.


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Mr. Hemant Kumar Physics 12 DBK eClass