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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CBSE 12 Ch-02 Current Electricity (Important Questions)
Last modified on:5 years agoReading Time:1Minute Type-A: Definition Based Question Short Answer Type Question For Electrostatics Question number 1-9 CLICK HERE Answers Type-B: Identify / Differentiate Based Short Answer Type Questions For Electrostatics Question number 1-9 CLICK HERE Answers Type-C: Reasoning Based Short/Long Answer Type Questions ANSWERS TYPE-D: Graph/Diagram Based ANSWERS Type-5: Law/Rule/Principle Based Type-6: Properties/Functions/Uses/Effects…
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Class 12 Physics Topicwise Analysis
Last modified on:5 years agoReading Time:1MinuteOut of Syllabus: Unit 10: Communication System Unit 9: After Zener Diode
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CLASS 12 Physics EMI & AC (VSQ)
Last modified on:5 years agoReading Time:16MinutesQ1. When are the voltage and current in LCR a.c. circuit in same phase? Answer- When the frequency of a.c applied becomes equal to the natural frequency of the LCR circuit (resonance occur when XL= XR) the voltage and current comes in same phase Q2. What is the power factor of…
