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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Case Study Questions for Class 10 Maths Chapter 10 Circles
Last modified on:3 years agoReading Time:3MinutesCase Study Questions for Class 10 Maths Chapter 10 Circles Question 1: A student draws two circles that touch each other externally at point K with centres A and B and radii 6 cm and 4 cm, respectively as shown in the figure. Based on the above information, answer the following…
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Case Study Questions for Class 10 Maths Chapter 5 Arithmetic Progression
Last modified on:3 years agoReading Time:3MinutesCase Study Questions for Class 10 Maths Chapter 5 Arithmetic Progression Question 1: In a flower bed, there are 43 rose plants in the first row, 41 in the second, 39 in the third and so on. (i) If there are 11 rose plants in the last row, then number of…
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Case Study Questions for Class 10 Maths Chapter 4 Quadratic Equations
Last modified on:3 years agoReading Time:4MinutesCase Study Questions for Class 10 Maths Chapter 4 Quadratic Equations Question 1: Raj and Ajay are very close friends. Both the families decide to go to Ranikhet by their own cars. Raj’s car travels at a speed of x km/h while Ajay’s car travels 5 km/h faster than Raj’s car.…
