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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Factorisation by Splitting the Middle Term with Questions
Last modified on:1 year agoReading Time:5Minutes Factorisation by Splitting the Middle Term with Questions Understanding the Factorization Process Factorization of quadratic polynomials of the form x2 + bx + c involves a systematic approach to simplify complex expressions into more manageable forms. This method, often referred to as “splitting the middle term,” allows us to break down…
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Conceptual Questions Based on Moving Charges and Magnetism
Last modified on:3 years agoReading Time:16MinutesConceptual Questions Based on Moving Charges and Magnetism Here we are providing conceptual questions for Class 12 Physics Chapter 4 Moving Charges and Magnetism. Q.1. How is a magnetic field produced ?Sol. A magnetic field can be produced by the following ways: (i) by a magnet (ii) by a current carrying…
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Numerical Problems Based on Class 12 Chemistry Chapter 3 Electrochemistry
Last modified on:4 years agoReading Time:9MinutesNumerical Problems Based on Class 12 Chemistry Chapter 3 Electrochemistry Q.1. Calculate the resistance of 0.01 N solution of an electrolyte whose equivalent conductivity is 420 ohm-1 cm2 equiv-1 (The cell constant of the cell is 0.88 cm-1). Show Answer Answer: 209.5 ohm Q.2. A conductivity cell when filled with 0.02…
