# Charging of Insulators

Charging of Insulators

Since charge cannot flow through insulators, neither conduction nor induction can be used to charge, insulators, so in order to charge an insulator friction is used. Whenever an insulator is rubbed against a body exchange of electrons takes place between the two. This results in appearance of equal and opposite charges on the insulator and the other body. Thus the insulator is charged.

For example rubbing of plastic with fur, silk with glass causes charging of these things.

• ## Conductors and Insulators

Conductors and Insulators Solids are mainly classified into two groups, conductors and insulators. In conductors, electric charges are free to move from one place to another, whereas in insulators they are tightly bound to their respective atoms. In an uncharged body, there are equal number of positive and negative charges. The examples of conductors of … Continue reading Conductors and Insulators

• ## Electric Field Due to a Point Charge

Electric Field Due to a Point Charge The electric field produced by a point charge q can be obtained in general terms from Coulomb’s law.First note that the magnitude of the force exerted by the charge q on a test charge q0 is then divide this value by q0 to obtain the magnitude of the … Continue reading Electric Field Due to a Point Charge

• ## Electric Field Due to a Charged Ring

Electric Field Due to a Charged Ring A conducting ring of radius R has a total charge q uniformly distributed over its circumference. We are interested in finding the electric field at point P that lies on the axis of the ring at a distance x from its centre. We divide the ring into infinitesimal … Continue reading Electric Field Due to a Charged Ring

• ## MCQ Questions for Class 11 Physics Chapter 6 Work Energy and Power

MCQ Questions for Class 11 Physics Chapter 6 Work Energy and Power Q.1. The magnitude of work done by a force(a) depends on frame of reference(b) does not depend on frame of reference(c) cannot be calculated in non-inertial frames.(d) both (a) and (b) Answer Answer: (a) Q.2. No work is done if(a) displacement is zero(b) … Continue reading MCQ Questions for Class 11 Physics Chapter 6 Work Energy and Power

• ## MCQ Questions for Class 11 Physics Chapter 5 Laws of Motion

MCQ Questions for Class 11 Physics Chapter 5 Laws of Motion Q.1. Inertia is the property of a body linked to tendency of a body(a) to change its position(b) to change its direction(c) to change the momentum(d) to resist any change in its state Answer Answer: (d) Inertia is defined as the ability of a … Continue reading MCQ Questions for Class 11 Physics Chapter 5 Laws of Motion

• ## MCQ Questions for Class 11 Physics Chapter 2 Units and Measurements

MCQ Questions for Class 11 Physics Chapter 2 Units and Measurements Q.1. The density of a material in SI units is 128 kg m-3 . In certain units in which the unit of length is 25 cm and the unit of mass is 50 g, the numerical value of density of the material is(a) 40 … Continue reading MCQ Questions for Class 11 Physics Chapter 2 Units and Measurements

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