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.
-
Charging of Insulators
Last modified on:4 years agoReading Time:2Minutes 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…
-
Charging by Contact
Last modified on:4 years agoReading Time:2Minutes Charging by Contact When a negatively charged ebonite rod is rubbed on a metal object, such as a sphere, some of the excess electrons from the rod are transferred to the sphere. Once the electrons are on the metal sphere, where they can move readily, they repel one another and…
-
Charging by Rubbing
Last modified on:4 years agoReading Time:3Minutes Charging by Rubbing The simplest way to charge certain bodies is to rub them against each other. When a glass rod is rubbed with a silk cloth, the glass rod acquires some positive charge and the silk cloth acquires negative charge by the same amount. The explanation of appearance of…
-
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…
-
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…
-
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…
