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:4 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:4 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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Numerical Problems Based on Composition of Vectors for Class 11 Physics
Last modified on:5 months agoReading Time:9Minutes Numerical Problems Based on Composition of Vectors for Class 11 Physics Numerical Problems on Vector Addition Class 11 Physics · Motion in a Plane SQ Vector Addition Practice Set Apply the parallelogram law of vector addition: $R = \sqrt{A^2 + B^2 + 2AB\cos\theta}$ Ch 4 · Motion in a Plane…
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Numerical Problems Based on Relative Velocity in 1D for Class 11 Physics
Last modified on:5 months agoReading Time:9Minutes Numerical Problems on Relative Velocity Class 11 Physics · Motion in a Straight Line SQ Relative Velocity Practice Set Apply the relative velocity formula $v_{AB} = v_A – v_B$ Ch 3 · Motion in a Straight Line 1 A jet airplane travelling at the speed of $450\text{ kmh}^{-1}$ ejects the…
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Numerical Problems Based on Position-Time and Velocity-Time Graphs for Class 11 Physics
Last modified on:5 months agoReading Time:17Minutes Numerical Problems Based on Position-Time and Velocity-Time Graphs for Class 11 Physics 1 Figure 3.64 shows the position-time graphs of three cars A, B and C. On the basis of the graphs, answer the following questions: (i) Which car has the highest speed and which the lowest? (ii) Are the…
