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 12 Biology Chapter 11 Biotechnology – Principles and Techniques
Last modified on:5 years agoReading Time:4MinutesCase Study Questions for Class 12 Biology Chapter 11 Biotechnology – Principles and Techniques Question 1: The DNA, which is transferred from one organism into another by joining it with the vehicle DNA is called passenger or foreign DNA. Generally three types of passenger DNAs are used. These are complementary DNA…
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Case Study Questions for Class 12 Biology Chapter 10 Microbes in Human Welfare
Last modified on:5 years agoReading Time:3MinutesCase Study Questions for Class 12 Biology Chapter 10 Microbes in Human Welfare Question 1: Villagers in a place near Chambur started planning to make power supply for agricultural purposes from cow dung. They have started a biogas plant for the purpose. Study the flow chart for biogas production given below…
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Case Study Questions for Class 12 Biology Chapter 8 Human Health and Diseases
Last modified on:5 years agoReading Time:6MinutesCase Study Questions for Class 12 Biology Chapter 8 Human Health and Diseases Question 1: In a study to test a new vaccine against a viral disease, mouse model testing is done. In this process, mice are vaccinated and their blood samples were tested. Mice developed mild disease symptom. After few…
