Table of Contents
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.
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Case Study Questions for Class 12 Physics Chapter 13 Nuclei
Last modified on:4 years agoReading Time:4MinutesCase Study Question 1: Read the passage given below and answer the following questions: Neutrons and protons are identical particle in the sense that their masses are nearly the same and the force, called nuclear force, does into distinguish them. Nuclear force is the strongest force. Stability of nucleus is determined…
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Case Study Questions for Class 12 Physics Chapter 12 Atoms
Last modified on:10 months agoReading Time:7MinutesCase Study Questions for Class 12 Physics Chapter 12 Atoms Case Study Question 1: The spectral series of hydrogen atom were accounted for by Bohr using the relation where, R=Rydberg constant = 1.097 x 107 m-1 Lyman series is obtained when an electron jumps to first orbit from any subsequent orbit.…
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Case Study Questions for Class 12 Physics Chapter 11 Dual Nature of Radiation and Matter
Last modified on:10 months agoReading Time:7MinutesCase Study Questions for Class 12 Physics Chapter 11 Dual Nature of Radiation and Matter Case Study Question 1: According to wave theory of light, the light of any frequency can emit electrons from metallic surface provided the intensity of light be sufficient to provide necessary energy for emission of electrons,…
