Group Lab Report 1 - Electrostactic Charge

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Jan 9, 2024

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PHYSICS LABORATORY LAB REPORT – 60% OF THE LAB GRADE (Complete and save in only one pdf document, send it by assignment in blackboard) Name (Last, First) Segura Alvarez, Fabiola Zahan, Ilma Zchesan, Leonel Title of the lab: ELECTROSTATICS CHARGE Date 05/19/2022 OBJECTIVES: (4 points) 1) Use the Charge Sensor and Faraday Pail to measure the electric charge. 2) Observe and quantify the separation of electrical charge by friction. 3) Observe and quantify the electrical charge by contact. 4) Observe and quantify charge by induction 5) Explain the charged transfer process. MATERIALS: (Complete by watching the video to the measures). (5 points) Vernier charge sensor LabQuest 2 software Faraday pail Cage Red and Black ground wires Wrist strap Electrostatic kit White and gray charge separators Metal ground plane Cotton cloth EXPERIMENTAL PROCEDURE: (Complete by watching the video all parts). (10 points) Charged by Friction Experiment: professor put on the wrist strap and attached to the metal plane to keep his body grounded, setup the LabQuest 2 to “Enable Data Marking” and began by rubbing the Electrostatic separators together. Professor pressed the collect data bottom and inserted the white

separator into the Faraday pail. The LabQuest started to graph and show peak charges. Removed the white one and inserted the gray one into the Faraday pail and the graph went down and marked the low peak. Later, inserted both simultaneously without touching in the Faraday pail and the graph went up to a neutral level. Here are the procedures in steps as well: 1.Connect the charge to lab quest and put the Faraday Pail inside and around the cage. 2.Put the metal cage on a ground plane and attach the appropriate black and red wires to the Faraday Pail. 3.Scuff feet on carpet then hold one finger down inside the faraday pail and cage. 4.Check for charges in the lab quest screen. 5.To keep the body from becoming charged, put on the wrist strap and attach the wire to the ground plane. 6.Set up lab quest and keep the rate to 10 samples/s. Change settings to enable data marking by clicking mode. 7.Start data collector and begin to rub the charge separators together. 8.Stick the white charge separator into the Faraday Pail, collect data using the lab quest and mark the point where the graph changes. 9.Remove the white charge separator and put the gray one in the Faraday Pail, collect data using the lab quest and mark the point where the graph changes. 10.Then remove the gray charge separator and carefully put both separators inside the pail without allowing them to touch. 11.Mark the point in the graph and pull them out and hit stop. 12.Lastly label the mark by naming them white, gray, and both. Charged by Contact Experiment: The professor placed the two separators on top of a damped cotton cloth to remove any excess of charge on them already. Later, he pressed the grounded bottom in the Vernier charger to remove any built-up charge in the Electrostatic kit. He setup the LabQuest 2 to “Enable Data Marking” and while he was wearing the wrist strap, he rubbed the two separators together and introduced the white separator into the Faraday pail and lay it down then he removed the separator and rubbed it on the edge of the pail and removed again. The LabQuest to collect new data from these four actions. Here are the procedures in steps as well:

1.To make sure the charge separators do not have any excess charge on them already, touch the damp cotton cloth with the separators. 2.Press the grey grounding rest button on the sensor to make sure there are no prior charges already on the system. 3.Use the standard settings on the lab quest, rate 10 samples/s and duration 60 seconds. 4.Enable data marking by clicking mode and advance on the settings then click collect. 5.Rub the charge separators together and take the white one put it inside the faraday pail and mark a point in the graph. 6.Then rub the white separator on the edge of the pail, mark the point and stop rubbing. 7.Hit stop on the data collector. 8.Label the different marks along the graph as insert, remove, touch, and remove again. Charged by Induction Experiment: The professor placed the two separators on top of a damped cotton cloth to remove any excess of charge. He made sure the separators and Electrostatic kit was free of any unwanted charge. Later, he rubbed the two separators together, pressed collect data bottom and inserted the white separator in the pail. He let inserted the separator for a few seconds and removed from pail then he reinserted the separator while he was plugging the black wire from metal plane to the edge of the pail and let them for a few seconds. After LabQuest collected data, he removed first the black ground wire and later the separator. Finally, he inserted and removed again the white separator in the pail for a final data collection. Here are the procedures in steps as well: 1.Make sure all materials are free of prior/excess charge by putting the wrist strap on, clicking the rest grounding button on the sensor, and blot the charge separators on wet cotton cloth. 2. Use the standard settings on the lab quest, rate 10 samples/s and duration 60 seconds. 3. Click collect for data and begin rubbing the separators together. 4. Insert white separator into the Pail then take it out. 5. Insert again and attach the ground wire to the inside of the pail for a second and then put it back while removing the disk from the pail. 6. Insert the disk back in for a moment and remove again, then hit stop for data collection. Analyze the graph. EXPERIMENTAL RESULTS: DATA, CALCULATIONS, TABLES, GRAPHS