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 9 Maths Chapter 9 Quadrilaterals
Last modified on:4 years agoReading Time:3MinutesCase Study Questions Question 1: After summervacation, Manit’s class teacher organised a small MCQ quiz, based on the properties of quadrilaterals. During quiz, she asks different questions to students. Some of the questions are listed below. (i) Which of the following is/are the condition(s) for ABCD to be a quadrilateral?(a) The…
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Case Study Questions for Class 9 Maths Chapter 2 Polynomials
Last modified on:4 years agoReading Time:3MinutesCase Study Questions Question 1: On one day, principal of a particular school visited the classroom. Class teacher was teaching the concept of polynomial to students. He was very much impressed by her way of teaching. To check, whether the students also understand the concept taught by her or not, he…
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Extra Questions for Class 10 Science Chapter 11 Human Eye and Colourful World
Last modified on:4 years agoReading Time:11MinutesQ.1. The sky appears dark instead of blue to an astronaut. State its reason. Answer. The sky appears dark to the astronaut as scattering does not take place at very high altitude due to the absence of atmosphere. Q.2. Which phenomenon is responsible for making the path of light visible? Answer.…
