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.
-
Electric Field of a Line Charge
Last modified on:3 years agoReading Time:3MinutesElectric Field of a Line Charge Positive charge q is distributed uniformly along a line with length 2a, lying along the y-axis between y=–a and y=+a. We are here interested in finding the electric field at point P on the x-axis. Derivation of electric field due to a line charge: Thus,…
-
Electric Field Lines
Last modified on:3 years agoReading Time:5MinutesElectric Field Lines Electric charges create an electric field in the space surrounding them. It is useful to have a kind of “map” that gives the direction and indicates the strength of the field at various places. Field lines, a concept introduced by Michael Faraday, provide us with an easy way…
-
Human Ear
Last modified on:4 years agoReading Time:3MinutesHuman Ear The human ear, like that of other mammals, contains sense organs that serve two quite different functions: that of hearing and that of head and eye movements. Anatomically, the ear has three distinguishable parts: the outer, middle, and inner ear. How Human Ear Works? Different sounds produced in our surroundings are collected by…
-
NCERT Based Notes for Class 7 Science Chapter 15 Light
Last modified on:3 years agoReading Time:3MinutesNCERT Based Notes for Class 7 Science Chapter 15 Light Importance of NCERT Notes for Class 7 NCERT notes for Class 7 are very important for students as they are designed to provide a clear and concise understanding of the concepts covered in each chapter. Here are some of the key…
-
NCERT Based Notes for Class 7 Science Chapter 14 Electric Current and Its Effects
Last modified on:3 years agoReading Time:4MinutesNCERT Based Notes for Class 7 Science Chapter 14 Electric Current and Its Effects Importance of NCERT Notes for Class 7 NCERT notes for Class 7 are very important for students as they are designed to provide a clear and concise understanding of the concepts covered in each chapter. Here are…
-
NCERT Based Notes for Class 7 Science Chapter 13 Motion and Time
Last modified on:3 years agoReading Time:4MinutesNCERT Based Notes for Class 7 Science Chapter 13 Motion and Time Importance of NCERT Notes for Class 7 NCERT notes for Class 7 are very important for students as they are designed to provide a clear and concise understanding of the concepts covered in each chapter. Here are some of…
