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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NEET DPP Biology Ch-06 Anatomy of flowering plants
Last modified on:5 years agoReading Time:16MinutesQ.1. During formation of leaves and elongation of stem, some cells ‘ left behind’ from the shoot apical meristem, constitute __(a) Lateral meristem (b) Axillary bud(c) Cork cambium (d) Fascicular cambium Q.2. Function of companion cells is(a) providing energy to sieve elements for active transport.(b) providing water to phloem.(c) loading of…
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MCQ Questions for Class 10 Science Chapter 15 Our Environment
Last modified on:3 years agoReading Time:9MinutesMCQ Questions for Class 10 Science Chapter 15 Our Environment 1. Name the thing in our body which helps us to digest food? (a) hormone (b) enzymes (c) stomach (d) mouth Answer (b) 2. Which human-made material cannot be broken down by the action of bacteria? (a) human flesh (b) flesh…
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MCQ Questions for Class 10 Science Chapter 9 Heredity and Evolution
Last modified on:3 years agoReading Time:29MinutesMCQ Questions for Class 10 Science Chapter 9 Heredity and Evolution Here we are providing MCQ Questions for Class 10 Science Chapter 9 Heredity and Evolution. Practicing these questions will help students to understand the chapter well. MCQ Questions for Class 10 Science Chapter 9 Heredity and Evolution CBSE Class 10…
