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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Reynolds Number
Last modified on:3 years agoReading Time:10MinutesWhat is Reynolds Number? The Reynolds number (Re) is a dimensionless parameter used in fluid mechanics to characterize the flow of a fluid (liquid or gas) around an object or through a conduit. It relates the inertial forces to the viscous forces in the fluid and helps determine the type of…
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Elastic and Inelastic Collision MCQs for NEET
Last modified on:5 years agoReading Time:15MinutesCollision is an isolated event in which a strong force acts between two or more bodies for a short time as a result of which the energy and momentum of the interacting particle change. In collision particles may or may not come in real touch e.g. in collision between two billiard…
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NUMERICALS BASED ON ELECTRICITY
Last modified on:3 years agoReading Time:33MinutesNUMERICALS BASED ON ELECTRICITY Here we are providing numericals for electricity class 10. Students are suggested to solve all the questions to understand the chapter well. Questions Q.1. What will be the current drawn by an electric bulb of 40 W when it is connected to a source of 220V? Q.2.…
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CBSE CLASS 10 SCIENCE ELECTRICITY QUESTIONS
Last modified on:4 years agoReading Time:11MinutesQ.1. How do we express electric current? Q.2. What is an electric circuit? Q.3. What does a switch do? Q.4. Conventionally, in an electric circuit the direction of electric current is taken as opposite to the direction of the flow of electrons, which are negative charges. Why? Q.5. What is the…
