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.
-
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…
-
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…
-
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…
-
Important Questions Class 12 Chemistry Chapter 6 General Principles and Processes of Isolation of Elements 1 Mark Questions
Last modified on:5 years agoReading Time:6Minutes1. What is pig iron? Ans. The iron which is obtained from blast furnace and contains about 4% carbon and many other impurities in smaller amounts like S, P, Si, Mn etc, is called pig iron. 2. What is cast iron? Ans. Iron obtained by melting pig iron with scrap iron and coke…
-
Important Questions CBSE Class 10 Science Life Processes 1 Mark Questions
Last modified on:5 years agoReading Time:10Minutes1. Amoeba shows following kind of nutrition(a) autotrophic(b) holozoic(c) saprotrophic(d) parasitic Answer (b)Holozoic 2. The process by which blood is cleared of metabolic wastes in case of kidney failure is called(a) artificial kidney(b) dialysis(c) transplantation(d) filtration Answer (b)Dialysis 3. Woody plants carry gaseous exchange through(a) root hair(b) stem hair(c) Lenticels(d) epidermal…
