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.
-
Charging of Insulators
Last modified on:5 years agoReading Time:2Minutes 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…
-
Charging by Contact
Last modified on:5 years agoReading Time:2Minutes Charging by Contact When a negatively charged ebonite rod is rubbed on a metal object, such as a sphere, some of the excess electrons from the rod are transferred to the sphere. Once the electrons are on the metal sphere, where they can move readily, they repel one another and…
-
Charging by Rubbing
Last modified on:5 years agoReading Time:3Minutes Charging by Rubbing The simplest way to charge certain bodies is to rub them against each other. When a glass rod is rubbed with a silk cloth, the glass rod acquires some positive charge and the silk cloth acquires negative charge by the same amount. The explanation of appearance of…
-
RD Sharma Solutions for Class 9 Maths Chapter 13 Linear Equations in Two Variables
Last modified on:6 years agoReading Time:51MinutesExercise 13.1 Question 1: Express the following linear equations in the form ax + by + c = 0 and indicate the values of a, b and c in each case: (i) -2x + 3y = 12 (ii) x – y/2 – 5 = 0 (iii) 2x + 3y = 9.35…
-
IIT Foundation Mathematics Problems on Area and Perimeter
Last modified on:5 years agoReading Time:6MinutesQ.1. If the sides of a triangle are 3 cm, 4 cm and 5 cm, then what is the radius of the circum-circle? Answer Answer: 2.5 cm Q.2. If the length of hypotenuse of a right angled triangle is 5 cm and its area is 6 sq cm, then what are…
-
IIT Foundation Mathematics Problems on Permutation and Combination
Last modified on:5 years agoReading Time:4MinutesQ.1. Each section in first year of plus two course has exactly 30 students. If there are 3 sections, in how many ways can a set of 3 student representatives be selected from each section? Answer Answer: 27000 Q.2. How many numbers are there between 100 and 1000 such that every…
