Static electric field pdf

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1.The integrals of normal electric field over both faces of the volume are equal. 2.All field lines that enter the volume must exit. 3.The net flux of electric field lines into the volume is zero. 4. No field lines originate inside the volume. Equation (4.5) is the three-dimensional equivalent of these statements. Electrostatic Fields - Coulomb's Law - Electric Field Intensity(EFI) due to Line, Surface andVolume charges- Work Done in Moving a Point Charge in Electrostatic Field-Electric Potentialdue to point charges, line charges and Volume Charges - Potential Gradient - Gauss's Law-Application of Gauss's Law-Maxwell's First Law - Numerical Problems. The Electric Field 1. Now, consider point P . P a distance r . r. from +Q. 2. An electric field E . E exists at P . P if a test test charge +q has a force F F at that point. 3. The direction . direction of the E is the same as the direction of a force . force on + (pos) + (pos) charge. E 4. The magnitude . magnitude of E . E is given by the formula: N; Units C. F E q 10.1 - Introduction to Electric Charge and Electric Field 1 Figure 1.1: Static electricity from this plastic slide causes the child's hair to stand on end. The sliding motion stripped electrons away from the child's bo,dy leaving an excess of positive charges, which repel each other along each strand of hair. (credit: Ken Bosma/Wikimedia Commons) 18.7.Conductors and Electric Fields in Static Equilibrium • List the three properties of a conductor in electrostatic equilibrium. • Explain the effect of an electric field on free charges in a conductor. • Explain why no electric field may exist inside a conductor. • Describe the electric field surrounding Earth. • Explain what Lectures on Electromagnetic Field Theory Weng Cho CHEW1 Fall 2019, Purdue University 1Updated: December 4, 2019 The field is a vector, it seems to contain much more information than the potential, which is scalar function. In reality, there are a lot of redundant information contained in the field, because the static electric field is a curl-free field. The choice of reference point in the potential is arbitrary. So only the potential difference is important. electric field in a conductor inside a conducting material, the electric field must be zero in an electrostatic situation imagine it wasn't - the electric field would cause forces on the 'free' charges and they'd accelerate, so the situation wouldn't be static the 'free' charges will always rapidly rearrange themselves MFMcGraw-PHY 2426 Ch21b-Electric Fields-Revised 8/23/2012 11 Static Discharge Operation. MFMcGraw-PHY 2426 Ch21b-Electric Fields-Revised 8/23/2012 12 Electrostatic Discharge Example Walking on a carpet can build up a static charge. Static charges can damage sensitive electronic chips. The term static refers to a situation where the fields do not vary with time. Static electric and magnetic fields are two distinct phenomena, both characterized by steady direction, flow rate and strength (thus a frequency of 0 Hz). A static electric field (also referred to as electrostatic field) is created by charges that are fixed in space; A static magnetic field is created by a magnet or charges that move as a steady