InterviewSolution
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InterviewSolution
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Explain electric field and also electric field is point charge. |
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Answer» Solution :Suppose, charge Q is placed at origin .O. in free SPACE. If another charge q is placed distance r at point P (OP =r), then Coulomb force acts on q. `vecF = 1/(pi epsilon_(0)).(Qq)/r^(2)hatr` If Q = 1C, then force acting on unit charge is called electric field E. `therefore vecF/q = 1/(4PI epsilon_(0)).Q/r^(2) hatr` `therefore vecE = 1/(4pi epsilon_(0)).Q/r^(2)hatr` or `E = (kQ)/r^(2)` Definition of electric field : The region around the charge in which the effect of electric charge is PREVAILING is called the electric field of the charge. Electric field `vecE` is also called electric fielt intensity. Force acting on charge q of position vector `vecr` is `vecF(vecr) =qvecE(vecr)` Electric field `vecE` is also called electric field intensity. Definition of Electric field : .The force acting on a unit positive charge at a given point in an electric field of a point charge of the system at charge is called the electric field or intensity of electric field `vecE`at that point. SI unit of electric field intensity is `NC^(-1)` or `VM^(-1)`and DIMENSIONAL formula is `[M^(1)L^(1) T^(-3) A^(-1)]` |
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