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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Conductors and Insulators
Last modified on:5 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…
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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…
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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…
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Important Questions Class 12 Chemistry Chapter 2 Solutions 1 Mark Questions
Last modified on:5 years agoReading Time:9Minutes1. Define the term –solubility? Ans. The maximum amount of a substance that can be dissolved in a specified amount of solvent is called its solubility. 2. What is the effect of pressure on solubility of a gas? Ans. The solubility of a gas increases with increases of pressure. 3. State Henry’s Law.…
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Important Questions Class 12 Chemistry Chapter 12 – Aldehydes Ketones and Carboxylic Acids 1 Mark Questions
Last modified on:5 years agoReading Time:5Minutes1. Give one use of Formalin. Ans. Formalin is used as a disinfectant, preservative for biological specimens and in leather industry. 2. What is the chemical name of Tollen’s reagent and Fehling’s solution. Ans. Tollen’s reagent = Ammoniacal Silver Nitrate Fehlings solution = Sodium Potassium Tartarate. 3. Write the structure of alkenes…
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Important Questions Class 12 Chemistry Chapter 11 Alcohols, Phenols and Ethers 1 Mark Questions
Last modified on:5 years agoReading Time:4Minutes1. Write IUPAC names of :- i. Ans. 5 – Methyloctan-3-ol ii. Ans. 1-Chloro propan-2-ol iii. Ans. Pentan – 1,3,4 – triol iv. Ans. 2 – Methylpropan -2-ol v. Ans. 1,3 – Dibromo – 4- chloro – 2- butanol vi. Ans. 5 – Chloro – 4 – ethyl – 5- methyl hexanol. vii. Ans. 2 – Phenyl ethanol…
