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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Charging of Insulators
Last modified on:5 years agoReading Time:2Minutes 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…
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Charging by Contact
Last modified on:5 years agoReading Time:2Minutes Charging by Contact When a negatively charged ebonite rod is rubbed on a metal object, such as a sphere, some of the excess electrons from the rod are transferred to the sphere. Once the electrons are on the metal sphere, where they can move readily, they repel one another and…
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Charging by Rubbing
Last modified on:5 years agoReading Time:3Minutes Charging by Rubbing The simplest way to charge certain bodies is to rub them against each other. When a glass rod is rubbed with a silk cloth, the glass rod acquires some positive charge and the silk cloth acquires negative charge by the same amount. The explanation of appearance of…
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Important Questions for CBSE Board Exams (Chemistry)
Last modified on:5 years agoReading Time:16Minutes This section will be updated regularly. Stay tuned!!! Q.1) Which point defect in crystals does not alter the density of the relevant solid? Answer: Frenkel defect. Q.2) Define the term ‘Tyndall effect’. Answer: The scattering of light by colloidal particles is known as Tyndall effect. Q.3) Why is the froth…
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THE SOLID STATE
Last modified on:5 years agoReading Time:25MinutesPoints to Remember 1. HCP and CCP have equal efficiency i.e., 74% of space is occupied and coordination number is 12. CCP arrangement has FCC lattice. 2. Coordination number is the number of nearest neighbouring points surrounding a particular lattice point (point may be atom, ions or molecules). 3. Packing ef…
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Career Guidance
Last modified on:8 years agoReading Time:5MinutesThere are a lots of career options After 12, for Science stream – Medical (Physics, Chemistry & Biology) and Non – Medical (Mathematics, Physics, Chemistry) Courses for PCMB (Physics, Chemistry, Maths & Biology) Dentist – BDS (5 years) Doctor – BHMS, BAMS, MBBS (5.5 years) Bachelor of Naturopathy & Yogic Science –…
