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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Conductors and Insulators
Last modified on:4 years agoReading Time:2MinutesConductors and Insulators Solids are mainly classified into two groups, conductors and insulators. In conductors, electric charges are free to move from one place to another, whereas in insulators they are tightly bound to their respective atoms. In an uncharged body, there are equal number of positive and negative charges. The…
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Electric Field Due to a Point Charge
Last modified on:3 years agoReading Time:1MinuteElectric Field Due to a Point Charge The electric field produced by a point charge q can be obtained in general terms from Coulomb’s law.First note that the magnitude of the force exerted by the charge q on a test charge q0 is then divide this value by q0 to obtain…
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Electric Field Due to a Charged Ring
Last modified on:3 years agoReading Time:4MinutesElectric Field Due to a Charged Ring A conducting ring of radius R has a total charge q uniformly distributed over its circumference. We are interested in finding the electric field at point P that lies on the axis of the ring at a distance x from its centre. We divide…
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Numerical Problems Based on Deriving Relationship between Physical Quantities for Class 11 Physics
Last modified on:5 months agoReading Time:12Minutes By using the principle of homogeneity of dimensions, the form of expression for a given physical quantity can be obtained if we know the factors upon which that physical quantity depends. Numerical Problems on Dimensional Analysis Class 11 Physics · Units and Measurements SQ Derivation of Formulae Practice Set Apply…
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Numerical Problems Based on Dimensional Correctness of Physical Relations for Class 11 Physics
Last modified on:5 months agoReading Time:10Minutes The dimensional formula of a physical quantity can be obtained by defining its relation, with other quantities, whose dimensions in M, L and T are known. Numerical Problems on Dimensional Analysis Class 11 Physics · Units and Measurements SQ Dimensional Consistency Practice Set Apply the Principle of Homogeneity to check…
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Numerical Problems Based on Conversion of Units from One System to Another for Class 11 Physics
Last modified on:5 months agoReading Time:13Minutes The SI units of mass, length and time are kg, m and s and the corresponding CGS units are g, cm and s. Numerical Problems on Unit Conversion (Dimensional Analysis) Class 11 Physics · Units and Measurements SQ Unit Conversion Practice Set Apply the formula $n_2 = n_1 \left[\frac{M_1}{M_2}\right]^a \left[\frac{L_1}{L_2}\right]^b…
