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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Class 10 Science Metals & Non-metals (Solved Assignment-01)
Last modified on:5 years agoReading Time:9MinutesQuestion 1: Name one metal and one non-metal which exist in liquid state at room temperature. Solution : Metal – Mercury. Non metal – Bromine. Question 2: Why are metals called electropositive elements whereas non-metals are called electronegative elements ? Solution : Metals are electropositive elements because they can form positive…
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Class 10 Science Magnetic Effects of Electric Current (Solved Assignment-03)
Last modified on:5 years agoReading Time:17MinutesQuestion 1: What happens when a current-carrying conductor is placed in a magnetic field ? Solution : When a current-carrying conductor is placed in a magnetic field, a mechanical force is exerted on the conductor which can make the conductor move. Question 2: When is the force experienced by a current-carrying…
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CBSE Class 10 Science Important Questions Chapter 13 Magnetic Effects of Electric Current
Last modified on:5 years agoReading Time:34MinutesQuestion 1: Which effect of current can be utilised in detecting a current carrying wire concealed in a wall ? Solution : Magnetic effect. Question 2: What conclusion do you get from the observation that a current-carrying wire deflects a compass needle placed near it ? Solution : We conclude that…
