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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Numerical Problems on Electric Power and Energy
Last modified on:5 months agoReading Time:27MinutesHere we are providing numerical problems based on electrical power and energy. These problems are useful for students studying in class 10. Practice these questions to master these topics. Class 10 Numerical Problems Useful for Class 10 Students Topics Covered Electric Power and Energy No. of Questions 70 Type Numerical Problems…
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Extra Questions for Class 10 Science Chapter 12 Electricity
Last modified on:4 years agoReading Time:15MinutesExtra Questions for Class 10 Science Chapter 12 Electricity Q.1. Name a device that helps to maintain a potential difference across a conductor.Answer. Cell or battery Q.2. Define 1 volt. Express it in terms of SI unit of work and charge calculate the amount of energy consumed in carrying a charge…
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Extra Questions for Class 10 Science Chapter 13 Magnetic Effect of Electric Current
Last modified on:4 years agoReading Time:11MinutesQ.1. Name the type of current: (a) used in household supply. (b) given by a cell.Answer. (a) Alternating current. (b) Direct current. Q.2. State the observation made by Oersted on the basis of his experiment with current carryingconductors.Answer. The electric current passing through a conducting wire produces magnetic effect. Q.3. How…
