Electric Charges And Fields 1. Electric Charge :- It is the basic property of matter. There are two types of charges , positive and Negative. * Charges of Same sign are called like charges , repel each other. * Charges of opposite sign are called unlike charges and attract each other. > In Conductors , electron moves freely inside the substance, wheres In Insulators don't have free electrons. * SI Unit of Charge is 'coulomb (C)'' & c.g.s unit of charge is 'stat coulomb'. Quantization of Charge ( q = ne ) :- Introduction, Measurement, Dimensional Analysis and Vectors. *Prof. Albert Einsten's name is associated with the discovery of "Theory of Relativity" , though he was awarded Nobel Prize for photoelectric effect. * Galileo discovered the principle of inertia. * S.Chandrashekhar and A. Salam were Indians born American scientists w...
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