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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Numerical Problems Based on Class 11 Physics Friction
Last modified on:3 years agoReading Time:6MinutesFriction Whenever a body moves or tends to move over the surface of another body, a force comes into play which acts parallel to the surface of contact and opposes the relative motion. This opposing force is called friction. Angle of friction The angle of friction may be defined as the…
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Numerical Problems Based on Class 11 Physics Free Body Diagram
Last modified on:3 years agoReading Time:6MinutesSolving problems in mechanics: Use of free-body diagram When a number of bodies are connected together by strings, rods, etc, it is convenient to consider each body separately and to write equation of motion for each body by taking into account all the forces acting on it and then equating the…
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Numerical Problems Based on Class 11 Physics Conservation of Linear Momentum
Last modified on:5 months agoReading Time:11MinutesLaw of conservation of linear momentum The second and third laws of motion lead to one of the most important and fundamental principles of physics, called the law of conservation of linear momentum. It can be stated as follows: When no external force acts on a system of several interacting particles,…
