Introductio of circuit element

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Sep. 222017

Tamzid’s Electrical Blog

Charge: Charge Charge is an electrical property of the atomic particles of which matter consists, measured in coulombs (C). # Electric charge is mobile ; i,e, it can be transferred from one place to another, where it can be converted to another form of energy. # The ha ge e o a ele t o is egati e a d e ual i ag itude to .6× − 9C, hile a p oto a ies a positive charge of the same magnitude as the electron. The presence of equal numbers of protons and electrons leaves an atom neutrally charged. # The only charges that occur in nature are integral multiples of the electronic charge, e = 1.6×10^(−19) C. # The law of conservation of charge states that charge can neither be created nor destroyed, only transferred. Thus the algebraic sum of the electric charges in a system does not change. # Alike charges repeal and opposite charges attract each other.

Current: Current Electric current is the time rate of change of charge, measured in amperes (A). The relationship between current i, charge q, and time t is given by

The di e tio of u e t flo is o e tio all take as the di e tio of positi e ha ge

o e e t.

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