The same thing is true for electric flux. ![]() Assume one is asked to pass out water through a ring, on which position does he/she expect the maximum flow of water? This happens as the area of the ring becomes perpendicular to the flow of water. Solution: Electric flux is defined as the amount of electric field passing through a surface of area A with the formula \(\Phi_e=\vec\)Įlectric Flux is a variable quantity as it relies on the direction of the electric field and the orientation of the planar object. Find the electric flux through the surface. The electric field stands for the symbol Φ (phi) and is defined by: Φ = E Δ SĮxample: A uniform electric field with a magnitude of E = 400 N/C incident on a plane with a surface of area A = 10m 2 and makes an angle of θ = 30 ∘ with it. The S.I unit of electric flux is given in Newton meters squared per coulomb. If we put in place an electric field with flowing water, we define it as electric flux.īecause the strength of the electric field is directly proportional to the number of lines passing per unit area, electric flux also indicates the strength of the electric field. If there is some angle θ between the velocity of liquid and surface area dS and flux of liquid, can be calculated from the given relation: This flow of liquid, which is given by the quantity v dS, is called flux. v = velocity of liquid (calculated as the rate of change of length per unit time). ![]() dS = surface area perpendicular to the velocity v of water.Electric Flux can also be described as the product of the electric field and surface area projected in a direction perpendicular to the electric field.Įlectric Flux Explanation of Electric FluxĪssume a liquid flowing with velocity ‘v’, over a very small surface dS, in normal direction with respect to the surface. The rate of flow of water is calculated as volume passing through the given area per unit time which is v dS.ĭifferentiating the given relation with respect to time, we have: (d Volume/ d t) = dS × (d length/ d t) It is an additional physical quantity that is used to measure the strength of an electric field and build the fundamentals of electrostatics in the world of Physics. In Electrostatics, Electric Flux is described as several electric field lines, passing per unit area.
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