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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Frictional Electricity
Last modified on:3 years agoReading Time:10Minutes What is frictional electricity? Frictional electricity, also known as static electricity, is the type of electricity that results from the friction or rubbing of two objects together. When two objects are rubbed against each other, the friction between them can cause the transfer of electrons from one object to the…
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Alternating Current
Last modified on:3 years agoReading Time:24Minutes What is Alternating Current (A.C.)? Alternating Current (AC) is an electrical current that periodically reverses direction in a circuit. Unlike Direct Current (DC), which flows only in one direction, AC constantly changes its polarity and magnitude over time. Explanation: In an AC circuit, electrons periodically switch direction, moving back and…
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Terminal Velocity
Last modified on:3 years agoReading Time:13Minutes What is Terminal Velocity? Terminal velocity is the constant maximum speed reached by an object in free fall or falling through a fluid (such as air or water) when the force of air resistance or fluid resistance becomes equal in magnitude and opposite in direction to the force of gravity…
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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…
