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 11 Chemistry Chapter 9 Hydrogen
Last modified on:3 years agoReading Time:4Minutes Case Study Questions for Class 11 Chemistry Chapter 9 Hydrogen Case Study/Passage Based Questions: Question 1: Read the passage carefully and answer the questions given below. Depletion of resources of fossil fuels will at some future time make hydrogen, either for use directly by combustion and electrochemically in fuel cells…
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Assertion and Reason Questions for Class 11 Chemistry Chapter 12 Organic Chemistry – Some Basic Principles & Techniques
Last modified on:5 months agoReading Time:5MinutesAssertion and Reason Questions for Class 11 Chemistry Chapter 12 Organic Chemistry – Some Basic Principles & Techniques Directions: (a) Assertion is correct, reason is correct; reason is a correct explanation for assertion.(b) Assertion is correct, reason is correct; reason is not a correct explanation for assertion(c) Assertion is correct, reason…
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Assertion and Reason Questions for Class 11 Chemistry Chapter 8 Redox Reactions
Last modified on:5 months agoReading Time:3MinutesAssertion and Reason Questions for Class 11 Chemistry Chapter 8 Redox Reactions Directions: (a) Assertion is correct, reason is correct; reason is a correct explanation for assertion.(b) Assertion is correct, reason is correct; reason is not a correct explanation for assertion(c) Assertion is correct, reason is incorrect(d) Assertion is incorrect, reason…
