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.
-
Reynolds Number
Last modified on:3 years agoReading Time:10MinutesWhat is Reynolds Number? The Reynolds number (Re) is a dimensionless parameter used in fluid mechanics to characterize the flow of a fluid (liquid or gas) around an object or through a conduit. It relates the inertial forces to the viscous forces in the fluid and helps determine the type of…
-
Physics Formulas Related to Mechanics
Last modified on:3 years agoReading Time:7MinutesPhysics Formulas Related to Mechanics Here we are providing physics formulas related to mechanics. All important mechanics formulas are covered in this article. Students are suggested to remember all formulas in order to grasp physics concepts well. 1. Newton’s Second Law: \( F = m \cdot a \) 2. Work-Energy Theorem:…
-
Physics Formulas Related to Electricity and Magnetism
Last modified on:3 years agoReading Time:4MinutesPhysics Formulas Related to Electricity and Magnetism Here we are providing physics formulas related to Electricity and Magnetism. Important electricity and magnetism formulas are covered in this article. Students are suggested to remember all formulas in order to grasp physics concepts well. 1. Coulomb’s Law: \[ F = \frac{k \cdot |q_1…
-
Case Study Questions for Class 9 Social Science Geography Chapter 2 Physical Features of India
Last modified on:3 years agoReading Time:5MinutesCase Study Questions for Class 9 Social Science Geography Chapter 2 Physical Features of India Case Study Questions Question 1: Read the following extract and answer the questions that follows: The Northern Plain is broadly divided into three sections. The Western part of the Northern Plain is referred to as the…
-
Case Study Questions for Class 9 Social Science Geography Chapter 1 India – Size and Location
Last modified on:3 years agoReading Time:4Minutes Case Study Questions for Class 9 Social Science Geography Chapter 1 India – Size and Location Case Study Questions Question 1: Read the following source and answer the questions that follows: India’s contacts with the World have continued through ages but her relationships through the land routes are much older…
-
Case Study Questions for Class 9 Social Science History Chapter 5 Pastoralists in the Modern World
Last modified on:3 years agoReading Time:5MinutesCase Study Questions for Class 9 Social Science History Chapter 5 Pastoralists in the Modern World Case Study Questions Question 1: Read the extract given below and answer the questions that follows: Drought affects the life of pastoralists everywhere. When rains fail and pastures are dry, cattle are likely to starve…
