Electric Fields - Project Potential Credits: /25 Using a pencil, answer the following questions. The lab is marked based

Post by **answerhappygod** » Mon Jul 11, 2022 12:16 pm

: Electric Fields Project Potential Credits 25 Using A Pencil Answer The Following Questions The Lab Is Marked Based 1 (140.66 KiB) Viewed 59 times

: Electric Fields Project Potential Credits 25 Using A Pencil Answer The Following Questions The Lab Is Marked Based 2 (146.66 KiB) Viewed 59 times

: Electric Fields Project Potential Credits 25 Using A Pencil Answer The Following Questions The Lab Is Marked Based 3 (52.66 KiB) Viewed 59 times

: Electric Fields Project Potential Credits 25 Using A Pencil Answer The Following Questions The Lab Is Marked Based 4 (148.83 KiB) Viewed 59 times

: Electric Fields Project Potential Credits 25 Using A Pencil Answer The Following Questions The Lab Is Marked Based 5 (31.21 KiB) Viewed 59 times

: Electric Fields Project Potential Credits 25 Using A Pencil Answer The Following Questions The Lab Is Marked Based 6 (101.87 KiB) Viewed 59 times

: Electric Fields Project Potential Credits 25 Using A Pencil Answer The Following Questions The Lab Is Marked Based 7 (91.89 KiB) Viewed 59 times

: Electric Fields Project Potential Credits 25 Using A Pencil Answer The Following Questions The Lab Is Marked Based 8 (17.85 KiB) Viewed 59 times

Electric Fields - Project Potential Credits: /25 Using a pencil, answer the following questions. The lab is marked based on clarity of responses, completeness, neatness, and accuracy. Do your best! Please ensure that any data measured (or recorded) includes the appropriate number of significant digits (only one uncertain digit). Name: Open the PHET sim entitled Charges and Fields, watch then introductory video and proceed as outlined below. Purpose: • To determine the factors which affect the electric field, E, surrounding a point charge. • To determine the relationship between E and Q, and E and r. • To graphically determine the value of Coulomb's Constant, "k" Procedure: Grab a single positive InC charge and drag it to the centre of the sim window. Place a check in the Show Numbers box and then grab an e-field sensor The sensor will show the e-field vector as a red arrow. 1. Describe both the direction and magnitude of the electric field as you move the sensor around the charge. Specifically, how does the magnitude vary with distance, r, from the charge and what direction does the e-field always point? 2. Sketch the electric field surround a positive point charge below. 3. Replace the positive charge with a negative charge. Describe any similarities and differences to what was discovered above.
Part 1: Electric Field vs Charge Place a check in both Show Numbers and Tape Measure. (note: Tape measure will be a choice offered after you have selected Show Numbers) Place the E-Field Sensor at 1m directly East of a +InC charge. Always measure from centre to centre. Record the magnitude of the e-field onto the table below. Drag another +1nC charge directly over top of the original to create a +2nC charge. DO NOT change the position of the sensor. Leave it at 1m. Record the new e-field. Repeat. Table 1: Electric Field vs Charge Electric Field strength, E (V/m) 9 Total Charge Q (nC) where 1 nC = 1x10°℃ == 1 2 3 4 5 6 7 8 9 10 Distance, r (m) constant 1 1 1 1 1 1 1 1 1 1 1. Move your e-field sensor to 1m directly north of the charge. How would this location affect your data above? 2. Based on your data above, describe the relationship between Electric Field Strength, E, and charge, Q. Circle your best choice below: a. Inverse, E a 1/Q (eg. If Q triples, E is reduced by a factor of 1/3) b. Direct, E a Q (eg. If Q triples, E increases by a factor of 3) c. Quadratic, E a Q² (eg. If Q triples, E increases by a factor of 3²) d. Inverse Square, E a 1/Q² (eg. If Q triples, E is reduced by a factor of 1/3²) 3. Based on your answer above, predict what a graph of Electric Field vs Charge would look like? Sketch below (be sure to label axis).
4. Using the data from your table create a graph of E vs Q. 5. Determine the slope of the line. And include units. (be sure to convert nC to C) 6. Based on your formula sheet and tutorials, what is the mathematical formula that relates E, Q, and r together for point charges?
7. The slope of your graph represents rise/run = AE/AQ. Rearrange the formula above to represent this ratio or slope. 8. Using the slope of your graph along with the above ratio determine the value of Coulomb's Constant, k. Remember, your distance, r, was held constant at 1m. Part 2: Electric Field vs Distance Clear away all but 2 charges to represent a single +2nC charge. Place this charge as far West on the window as possible. Start with the E-Field Sensor at 0.5m directly East. Always measure from centre to centre. Record the magnitude of the e-field onto the table below. 72 Move the sensor to 1m east and record the magnitude of the e-field, E. DO NOT change the magnitude of the charge, Q. Leave it at +2nC. Record the new e-field. Repeat and complete the table below Table 2: Electric Field vs Distance Electric Field strength, E (V/m) Charge Q (nC) Constant at +2nC 2 2 2 2 2 2 2 2 2 2 Distance, r (m) 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 Calculated Column 1. Based on your data above, describe the relationship between Electric Field Strength, E, and distance from the charge, r. Circle your best choice below: a. Inverse, E a 1/r (eg. If r triples, E is reduced by a factor of 1/3) b. Direct, Ear (eg. If r triples, E increases by a factor of 3) c. Quadratic or Square, E a r (eg. Ifr triples, E increases by a factor of 3²) d. Inverse Square, E a 1/r² (eg. If r triples, E is reduced by a factor of 1/3²)
2. Based on your answer above, predict what a graph of Electric Field vs Distance would look like? Sketch below (be sure to label axis).
3. Using the data from your table create a graph of E vs r. 4. Based on the shape of the graph, what type of relationship is represented? Circle a. Direct b. Quadratic or Square c. Some sort of Inverse (Inverse or Inverse Square) 5. Your chosen relationship (based on your answers above) will help you determine what must be graphed in order to create a straight line (so that you can determine the slope). The graph straightening method is always the same. Your answer to question 1 and 4 tells you what to graph. For example, if the relationship is a. Inverse, E a 1/r then graph E vs 1/r b. Direct, E ar then graph E vs r (no manipulation required as this is already straight) c. Quadratic or Square, then graph E vs r² d. Inverse Square, then graph E vs 1/r²
You will notice that you have one blank column on the above data table. Use this column to calculate what must be plotted (either 1/r, rª², or 1/²). Complete this column and graph this "straightened" data below. If the graph is NOT straight, you have chosen the wrong relationship and you must try again. Hint: the equation always gives it away) 6. Determine the slope of your straightened graph and include any units. (Remember, slope = Ay/Ax. In other words, the slope is the RATIO of the y-values to the x-values) 7. Based on your formula sheet and tutorials, rearrange mathematical formula that relates E, Q, and r together to represent the slope of your graph? ? (i.e. write the equation to represent the same ratio as your slope does)
8. Using the slope of your graph along with the above ratio determine the value of Coulomb's Constant, k. Remember, your charge, Q, was held constant at +2nC.