# PHYS LAB REPORT

Topics: Electric charge, Electric field, Electromagnetism Pages: 4 (2376 words) Published: November 3, 2014

Mapping Electric Field from Electric Potential Lines Using Overbeck Electric Field Mapping Apparatus Arlu Swaine Therese E. Nebreja1, Pi W. Poli*2, Shannan Rivera3, Rose Pauline P. Santos4, Jayvelyn G.Trinidad5, Edson Paul S. Valiente6 1 Department of Electrical Engineering-CEAT, UP Los Baños

2 Department of Electrical Engineering-CEAT, UP Los Baños
3Department of Industrial Engineering-CEAT, UP Los Baños
4Institute of Chemistry-CAS, UP Los Baños
5Institute of Chemistry-CAS, UP Los Baños
6Department of Civil Engineering-CEAT, UP Los Baños
*Corresponding author:princesspi_poli@yahoo.com
ABSTRACT
This experiment showed how to map equipotential lines of charged bodies, specifically of a point charge and a line charge, and then determine the electric field. The data gathered during the experiment were plotted in a graph and analyzed. It proved that in a given electric field region, electric potential varies from one point to another and it is possible to locate points with the same potential. Field lines were drawn to show the direction and strength of field. The closer the lines, the stronger the force acts on an object. Keywords: Electric Field, Potential Line, Voltmeter, Probe

1. Introduction
In Coulomb’s Law, it explained the forces that charged objects apply to one another, but it does not explain how these forces mediated when the objects are not in contact. This is where the concept of field enters. We all know that objects with mass experiences a force whenever it is in a gravitational field or produced by another object with mass that made a contact with it. Gravitational field is a constant which pulls the object directly towards the center of the earth which means downward and perpendicular to the Earth’s surface. Charges, like other objects, have mass too. Therefore, they also experience force by means of contacts with other charges or because of field. This is where the concept of electric field enters. It’s like gravitational...

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3. R. Augustine, A. Channell. “ Electrical Fields and Equipotential Lines”. 2010
4.