Link to the website charges and field simulator:

https://phet.colorado.edu/sims/html/charges-and-fields/latest/charges-and-fields_en.html

AutoSave OFF WHY CGDE ... w- Lab 2 Home Insert Draw Design Layout References Mailings Review View Zotero Tell me Comments Editing Share Arial V 11 VA A Aa A AaBbCcDdEe AaBbCcDdEe AaBbCc[ AaBbCcDd AaBbCcDdEe Paste BIUvab X X A DAY Normal No Spacing Heading 1 Heading 2 Heading 3 Styles Dictate Sensitivity Editor Pane Lab 2 Electric Field and Potential Objective Understand electric field . Understand the electric potential concept. Establish relationship between electric field and electric potential Part I - Electric Field and Potential 1. Open Charges and Field simulator a) In the menu field locate at top right, de-select "Electric Field", select "Grid". b) Drag a positive charge and a negative charge, put them on the same horizontal line, but separated by 8 grid distance. As shown in the figure below O Electric Field Direction only Voltage GOV a c) Use the tape measure tool to measure the distance between the two charges: [answer d) Put the tape measure tool back and take out the other tool (potential meter). Put the Meter on each of the grid points between the two charges and measure the potential, record the value in the table below Grid from + charge 5 6 Potential e) Now put the meter on the first grid again, then click on the pencil, a green circle should appear, repeat this step for each of the grid point. Zhujun Li Summer 2020 Page 1 of 3 518 words X English (United States) Focus E + 104%AutoSave OFF WHY CGDE ... w Lab 2 Home Insert Draw Design Layout References Mailings Review View Zotero Tell me Comments Editing Share Arial V 11 A A Aa A EV EVEVEE AaBbCcDdEe AaBbCcDdEe AaBbCc[ AaBbCcDd AaBbCcDdEe Paste BIUvab X X A DAY Normal No Spacing Heading 1 Heading 2 Heading 3 Styles Dictate Sensitivity Editor Pane f) Move the meter along the green line, what do you observe on the value of the potential? What do you think the green line mean? [answer] g) Now select the "Electric Field" in the menu. Observe the relationship between electric field line and the green line (equal-potential lines), what can you conclude? [answer] h) Use the distance measured in c) and charge values given, calculate the electric field E(indicate the direction) and electric potential Vat the grid point 4. E= [answer] V=[answer] i) Take the "Sensors" yellow point (on the bottom panel) and measure the electric field at grid 4. Record the measured value (if you have not, check the Value box on the side panel). Then calculate the percentage difference between your measure value and calculated value in h). show your work. Percentage difference=- value1-value2 average of the two values X 100% Percentage difference=[answer] j) Click the reset button; you can play around by putting two positive charge, four charges. Summary: The electric field lines begin on positive charges and end on negative charges. The electric field lines are perpendicular to equipotential surfaces. The density of electric field lines is proportional to the magnitude of the charge. No two field lines can cross. Page 2 of 3 518 words X English (United States) Focus E + 104%