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Question 1

Electrostatics is

Answer 1

The electricity developed on objects upon rubbing them with each other

Question 2

Negative charged objects

Answer 2

Ebonite, catskin, silk, amber, rubber, plastics

Question 3

Electric charge is

Answer 3

The property which gives rise to electric force

Question 4

Nuclear force b/w p and n is ___ than Electrostatic force between e and nucleus

Answer 4

Greater

Question 5

Why does glass have net positive charge

Answer 5

Glass lets go of e more easily than silk. e flow from glass to silk

Question 6

Conduction v induction

Answer 6

e flow from an uncharged body towards a positively charged one, uncharged body gains a net positive charge
Electrification with opposite charge as that of the body it is charged with, no actual transfer of electrons

Question 7

Conservation of charge

Answer 7

Net charge is constant for an isolated system

Question 8

Limitations of coulombs law

Answer 8

Valid only when both charges are point charges
Not valid when both are in motion

Question 9

Principle of Superposition

Answer 9

In a system for n charges, force on any charge is vector sum of all remaining charges to the particular charge

Question 10

Permittivity and E0

Answer 10

Property of medium to permit the extent of interaction between two charges, greater the permittivity , E, lesser the force of attraction
E0 = permittivity of free space dielectric Constant

Question 11

Electric Field intensity

Answer 11

Electric Field due to charge q at a point on space may be defined as force experienced by unit positive charged placed at that point
+Ve charge - outward E
-ve charge - inward E