Department of mathematics and physics state university of new york at alfred. This means that if a charge is at any point on a given equipotential line, no work will be required to move it from one point to another on that same line. Lines of equal potential can be used to plot a force field, as lines of force are perpendicular to such equipotential lines figure 3. This free icons png design of equipotential terminal png icons has been published by. V 0 for movement along an equipotential surface, w 0. Electric field intensity is perpendicular to the equipotential contours. The 1 ma and 6 ma values above represent the current flow through an electrical worker who is unprotected from involuntary muscle reaction due to shock. Many high school students struggle more with this concept than many others. The electric potential,v, is the energy per unit charge. Equipotential lines and electric fields objectives 1. Equipotential bonding 1 concrete reinforcing steel per nec 680. But to know if potential is constant or not, you need to compare it. An equipotential surface is a threedimensional version of equipotential lines. Electric field lines give a way of visualizing electric fields.
Download the labview file from the web and save the file to your desktop right click on the. Play now summary this 28minute dvd describes the difference between grounding and bonding, and the importance of equipotential bonding for personal protection. In a similar way, the potential at various points can be represented. Mapping of equipotential surfaces using the free quantum. For the contribution history and old versions of the redirected page, please see. Phys 222 worksheet 7 equipotential surfaces supplemental. Experiment2 with equipotential lines or, in the case of 3d space, with equipotential surfaces, provides the same degree of information as by mapping out. An equipotential line is a line along which the electric potential is constant. Modeling equipotential patterns and electric fields. In any potential field, the equipotential lines describe a continuum of points in space on which the potential is the same.
Equipotential grounding at aep americas line workers respond to outages every day. Equipotential definition of equipotential by merriamwebster. Equipotential or isopotential in mathematics and physics refers to a region in space where. Equipotential lines depict onedimensional regions in which the electric potential created by one or more nearby charges has a constant value. Mapping the potential curves and field lines of an electric dipole.
You will plot equipotential lines and sketch in lines representing the electric field between the. How to apply bonding when working on overhead lines, in substations, during conductor stringing, when loc. How much work is done by the field during this motion. An equipotential of a scalar potential function in ndimensional space is typically an n.
Equipotential or isopotential in mathematics and physics refers to a region in space where every point in it is at the same potential. To experimentally search points, in an electric field, having the same potential equipotential lines, and. The process by which a conductor can be fixed at zero volts by connecting it to the earth with a good conductor is. Substation absd equipotential earth mat application guide. Augdec 2011 dept of ece gp conductors free electrons which can migrate throughout the. The apparatus used to map equipotential lines and electric field vectors. Pdf presentation on equipotential surfaces and dielectrics. A difference in potential can only be achieved by losing or gaining energy. These levels are all based upon proper design and installation of equipotential grounding prior to beginning work.
The recent snow and ice storms left customers in the dark for several days. The relation between equipotential lines and electric field lines is also discussed. Thus the equipotential surfaces are cylinders coaxial with the given cylinder. They destroyed entire electrical systems along the gulf coast. To learn the concepts of electric field lines and equipotentials, 2. In practice, we cannot measure the potential at a point but we measure its potential difference with respect to a.
Equipotential lines are always perpendicular to electric field lines. Equipotential surfaces lab activity phet contribution. Using the properties of equipotential surfaces and lines of force summarized in the lab writeup, you should be able to examine how the electric field varies depending on such factors as charge distribution and distance to a charged object, and how your results compare with the behavior you might expect. Founded in 2002 by nobel laureate carl wieman, the phet interactive simulations project at the university of colorado boulder creates free interactive math and science simulations.
Measure the voltage in a circuit with a multimeter. The mapping of a region of space with equipotential lines or, in the case of 3d space, with equipotential surfaces, provides the same degree of information as by mapping out the electric field itself throughout the region. The gravity analogy again in the earths gravitational field, equipotential surfaces are simply flat, level areas. Using these equipotentials, sketch the electric field lines, which are perpendicular to the equipotentials. These define simple curves lines in 2d or surfaces in 3d that never cross each other. Equipotential contours for three geometries will be investigated to explore the relationship between potentials and electrical field lines. Determine the lines of constant electric potential for two simple con.
Board will be supported by ancor bolts expoxyed to the existing. Four equipotential surfaces black seen in cross section are all perpendicular to the electric field lines violet. The contents of the equipotential surface page were merged into equipotential. Download the labview file from the web and save the file to your desktop right. Determine the lines of constant electric potential for two simple con gurations of oppositely charged conductors.
Equipotential lines and electric fields national math and science. This document applies to activities that manufacture, process, assemble, install, package, label, service, test, inspect, transport or otherwise handle electrical or electronic parts, assemblies and equipment susceptible to damage by electrostatic discharges greater than or equal to 100 volts hbm, 200 volts cdm and 35 volts on isolated conductors. Computed electrostatic equipotentials black contours between two electrically charged spheres. Equipotential terminal icons png free png and icons. This webpage describes how groundwater flow is defined using equipotential lines and surfaces to illustrate groundwater flow concepts in order to establish a framework to explain contaminant transport in the subsurface. Now, try to find some location on the paper that is at about. Equipotential lines northwestern undergraduate physics labs. Detacs equipotential bonding for hydrovac operators is an interactive exploration of electrical hazards and how they can be managed effectively. Equipotential lines indicate a certain voltage and are always constant, so for two equipotential lines to cross would mean that the area they cover has two separate voltages at the same time, which is not possible.
Continue to move the probe, but only in a direction which maintains the voltmeter at the same reading. Do this for two differently shaped sets of electrodes. The equipotential zone, or epz, is made to do just that. Thousands users have previously viewed this image, from vectors free collection on. The potential is the same along each equipotential line, meaning that no work is required to move a charge anywhere along one of those lines. Equipotential definition is having the same potential. Equipotential surface mapping equipotential lines or surfaces in 3d are set of points that have the same electrical potential. Modeling equipotential patterns and electric fields john nice south gwinnett high school georgia tech stepup program problem. To develop an understanding of electric potential and electric fields. Subscribe to americas largest dictionary and get thousands more definitions and advanced searchad free. Connect the points to produce an equipotential line. This usually refers to a scalar potential in that case it is a level set of the potential, although it can also be applied to vector potentials. Determine the electric eld from lines of constant electric potential. Electrode patterns follow the procedure presented below for each of the electrode configurations.
Main protective equipotential bonding the purpose of earthing the exposedconductiveparts of an installation is to ensure that, in the event of a fault line conductor to an exposedconductive part, sufficient fault current flows to operate the disconnection device fuse, circuitbreaker, rcd. It is an excellent tool forvisualizing electric field and equipotential lines. The course covers working around underground or overhead high voltage lines, or in areas where static electricity could ignite flammable vapors. Does a diving board on a swimming pool need to be bonded to the equipotential earthing system. No part of this website may be reproduced, stored in a retrieval, or transmitted in any form or by any mean. Equipotential surfaces and lines boundless physics. Equipotential grounding at aep incident prevention. Phet sims are based on extensive education research and engage students through an intuitive, gamelike environment where students learn through exploration and discovery. Clarke clicker question 1 what is the potential, v p, at point p in the figure below.
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