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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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,…
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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…
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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…
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Case Study and Passage Based Questions for Class 12 Biology Chapter 6 Molecular Basis of Inheritance
Last modified on:4 years agoReading Time:2MinutesCase Study/Passage Based Questions: Question 1: Given below is the diagram of a tRNA molecule. Answer the questions based on the above diagram:(i) Why is charging of tRNA essential in translation?(ii) Where does peptide bond formation occur in a bacterial ribosome?(iii) Name the scientist who called tRNA an adaptor molecule. Answer…
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Mental Maths Question Bank for Class 7
Last modified on:4 years agoReading Time:2MinutesWe are providing Mental Maths Question Bank for Class 7 Studying Studying Students. These questions are prepared by subject experts and includes all chapters of class 7 maths. Each chapter contains more than 50 questions for practice. Practicing these questions will help students to strengthen their understanding of all the important…
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Case Study and Passage Based Questions for Class 12 Biology Chapter 5 Principles of Inheritance and Variation
Last modified on:4 years agoReading Time:2MinutesCase Study/Passage Based Questions: Question 1: Study the flowchart given below and answer the questions that follow. (i) What is a mutagen? Name a physical factor that can be mutagen.(ii) What is point mutation? Give one example.(iii) Mention two causes of frame-shift mutation. Answer Ans. (i) All the physical and chemical…
