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.
-
Conductors and Insulators
Last modified on:4 years agoReading Time:2MinutesConductors and Insulators Solids are mainly classified into two groups, conductors and insulators. In conductors, electric charges are free to move from one place to another, whereas in insulators they are tightly bound to their respective atoms. In an uncharged body, there are equal number of positive and negative charges. The…
-
Electric Field Due to a Point Charge
Last modified on:3 years agoReading Time:1MinuteElectric Field Due to a Point Charge The electric field produced by a point charge q can be obtained in general terms from Coulomb’s law.First note that the magnitude of the force exerted by the charge q on a test charge q0 is then divide this value by q0 to obtain…
-
Electric Field Due to a Charged Ring
Last modified on:3 years agoReading Time:4MinutesElectric Field Due to a Charged Ring A conducting ring of radius R has a total charge q uniformly distributed over its circumference. We are interested in finding the electric field at point P that lies on the axis of the ring at a distance x from its centre. We divide…
-
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…
-
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…
-
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…
