![]() R is the distance of the point from the center of the charged body. Where, Q is the charge of the body by which the field is created. The expression of electric field at a point is given by 2) An electric flux of 2 V-m goes through a sphere in vacuum space. E Q/ (4 r 2 ) which is the electric field due to a particle with charge Q. So, if Q is the charge of a body and Ψ is the electric flux emanated from the body, then we can write,Įlectric flux density is defined as the amount of flux passes through unit surface area in the space imagined at right angle to the direction of electric field. Answer: From the formula of the Gauss law, E 4 r 2 Q/. (One coulomb is equal to the magnitude of charge of 6.25 X 1018 electrons. ![]() coulombs per square meter where the area is perpendicular to the lines of flux. Together, these laws are enough to define the behavior of the electric field. Answer: The electric flux density, D, is then equal to the electric flux emanating from the charge, q, divided by the area of the sphere. As the flux is total number of lines of force emanated from the charge body, the unit of flux is also taken as Coulomb. Electric fields are caused by electric charges, described by Gausss law, and time varying magnetic fields, described by Faradays law of induction. Share on Whatsapp India’s 1 Learning Platform Start Complete Exam Preparation Daily Live MasterClasses. We know that number of lines of force emanated from a positive charge body is numerically equal to the charge of the body measured in coulomb. By equation 1 it is clear that the electric flux is a dot product of electric field intensity and area. We take the measuring unit of flux as the amount flux emanated from one coulomb positive electric charge. We generally denote electric flux with Ψ. This is because, an isolated magnetic north pole or an isolated magnetic south pole do not exist practically, but an isolated positively charged body and an isolated negatively charged body can exist. Like magnetic flux, electric flux lines are not always closed loop. An electric field is represented by electric flux. Electric flux is defined as the total number of electric lines of force emanating from a charged body.
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