Capacitor Basics Lab Instructions In this experiment, you will use a simulation to observe the effect of changing the area of capacitor plates or the distance between the plates on the charge on the plates of a capacitor, the energy stored in it, the electric field between its plates and the potential difference across its plates. Important Note: - If you do any work on Excel, you need to submit the Excel file also to get marks. Experiment Procedure 1. Click the link to the virtual lab Capacitor Basics Lab. (https://phet.colorado.edu/sims/html/capacitor-lab- basics/latest/capacitor-lab-basics en.html) 2. Click Capacitance Capacitor Lab: Basics Capacitance Part 1 - Capacitance Changes with Battery Connected 1. Check the options: Capacitance, Top Plate Charge, Stored Energy, Plate Charges, Bar Graphs, Electric Field. 2. Adjust the green arrows for Plate Separation and Plate Area to their lowest values of 2.0 mm and 100 mm respectively. 3. Drag the battery slider upward to 1.5 V. Capacitor Late Basks PHET : 4. Record the capacitance value C, stored energy En, and battery potential V. 5. Record the top plate charge Q. 6. The first observation has been recorded for you. 7. Calculate and record the strength of electric field E by using the formula E = o /zo or by using E = V/d. 8. Change the plate separation and plate area as indicated in the table and record the values for the otherPlate Stored Battery Charge on Plate area A separation d Capacitance Energy En Top Plate Q Electric Field # Potential V (mm) mm C (PF) (PJ) E (V/m) (V) (PC) 2 100 0.44 0.50 1.5 0.66 745 2 2 200 3 2 400 4 4 100 4 200 4 400 7 6 100 8 6 200 6 400 10 8 100 11 8 200 12 8 400 13 10 100 14. 10 200 15 10 400 Analysis of Part 1: All graphs must have the correct labels for the title, axes, and units. You can plot it by hand on a graph paper, take a picture and paste it. You could also use Microsoft Excel to generate the graph and paste that chart. 1. What happens to the capacitance of the capacitor as the plate separation d increases but plate area A stays constant? Use the data table above and plot a graph using the data for constant d's to answer this question. 2. What happens to the capacitance of the capacitor as the plate area A increases but plate separation d stays constant? Use the data table above and plot a graph using the data for constant A's to answer this question.What happens to the charge Q on the capacitor as the capacitance C ofthe capacitor increases? Plot a graph between Q and C to answer this question. What is the relationship between the energv stored in the capacitor to its capacitance? Use the data table above and plot a graph between En and C to answer this question. What is the relationship between the electric field between the capacitor plates to its capacitance? Use the data table above and plot a graph between E and C to answer this question. What is the relationship between the electric eld between the capacitor plates to the plate separation? Use the data table above and plot a graph between E and d to answer this question. What is the relationship between the electric eld between the capacitor plates to plate area? Use the data table above and plot a graph between E and A to answer this question. Explain the answers to all questions above using the formulas you have learnt about capacitors. Part 2 Capacitance Changes with Battery Removed All graphs must have the correct labels for the title, axes, and units. You can plot it by hand on a graph paper, take a picture and paste it. You could also use Microsoft Excel to generate the graph and paste that chart. HP'S-PF'WN!' 599 10. Check the options: Capacitance, Top Plate Charge, Stored Energy, Plate Charges, Bar Graphs, Electric Field. Adjust the green arrows for Plate Separation and Plate Area to 5.0 mm and 200 mm2 respectively. Drag the battery slider upward to 1.5 V. Now click the greyr curved arrow at the top to the right to disconnect the capacitor from the batterv. Record the values of plates separation d and plate area A in the table below. Remember to use the correct units. Record the capacitance value C, stored energy En, and plate charge 0, Drag the voltmeter out and connect its leads to the top and bottom connectors of the ca pacitor. Record the potential difference 'v' across the capacitor plates. The first observation has been recorded for you. Calculate and record the strength of electric field E by using the formula E = 0/30. Change the plate separation and plate area as indicated in the table and record the values for the other columns. l!.l|'-.b .-.:.| I .tr- =:.:-...-. 1' I:.