Physics Laboratory Report part 4

Physics Laboratory Report Title: Electric Potential and electric field Lab number and Title: lab 203(Electric Potential and electric field) Name: Moe Jawish Group ID: 6 Date of Experiment: 10/10/2023 Date of Submission: 10/17/2023 Course section & section number: 121A-005 Instructor’s Name: Punyakanthi Sandeepani Thilakaratne Partner’s Names: Patrick Kearney, Andrew Dalmedo, Justin Andree Lo 1. Introduction: - Objectives: - For this lab there were three objectives: - Use MATLAB to calculate the electric potential and further the electric due to three different charge configurations, draw a contour and surface plots of the electric potential. - Measure the electric potential and find the equipotential lines and further draw the electric lines. - Calculate the electric field by the actual measured electric potential and plotting the graph of electric potential vs. position. - Theoretical Background: - Because the electrostatic force is a conservative force, similar to potential energy in the cases of other forces such as gravitational force and elastic force due to a spring, when dealing with the electrostatic phenomena, we also introduce the concept of electric potential energy and the associated electric potential defined as the electric potential energy per unit charge. 2. Experimental Procedure: - Equipments: - MatLab program - Field mapping Board - U probe (wand) - Field plates (three types) - Plastic templates (two types) - Power Supply, DC - Voltmeter - Black and red lead wires - Paper (three sheets) - Flexible curve - Procedure: - Connect and power up all equipment, placing the field plate for two point charges on the underside of the mapping board first.

- Trace the point charges onto a sheet of paper by lining up the sheet on the top of the board, the field plate on the underside, and the plastic template together. - With the power supply and voltmeter powered on, find and mark some points at 4, 3, and 2V between the two charges, then, using the flexible curve, connect the points to visualize the lines of varying electric potential. - Replace the two point charges field plate with the parallel and point charge field plate. - Repeat steps 2-3. - Replace the parallel and point charge field plate with the two parallel charges field plate. - Repeat steps 2-3 3. Results: