3. Now place the sensor 2 m away on the right of the +1 nC charge along a straight line. The potential, in V, you measure at the location of the sensor is a. Around 18 V, giving the magnitude of the electric field strength of around 36 V/m. b. Around 9 V, giving the magnitude of the electric field strength of around 9 V/m. c. Around 6 V, giving the magnitude of the electric field strength of around 4 V/m. d. Around 4.5 V, giving the magnitude of the electric field strength of around 2.25 V/m. 4. Now, at the same location where you had the +1 nC charge, place a -1 nC charge (take the +1 nC away first). At 1 m away from the -1 nC charge, what potential, in V, do you measure? a. Around -18 V, giving the magnitude of the electric field strength of around 36 V/m. b. Around -9 V, giving the magnitude of the electric field strength of around 9 V/m. c. Around -6 V, giving the magnitude of the electric field strength of around 4 V/m. d. Around -4.5 V, giving the magnitude of the electric field strength of around 2.25 V/m.Note: You can "delete" a charge or a Sensor by dragging them into the box "Box (drag here)". Also, note that two "big squares" (1 big square 1 square Minor grid point is denoted by the red dotted square in the figure on the right) equal 0.5 m in length. I have also Major grid point denote major and minor grid point. Figure 3 1 meter The aim of Activity 6 is to familiarize yoursen with electric potential. Electric field and electric potential: The electric field can be expressed as (from Ch 19) IAVI = IE dl nian or, IEI = 14 VI / d This gives us the unit of E in V/m. Look at figure 2 and at the sensor roughly in the middle of figure 2, and the electric field vector attached to this sensor (red arrow) that indicates the direction of the electric field at the sensor position. Note: by convention, a sensor is always a positive charge; this is the test charge. For the senor roughly in the middle of figure 2, the magnitude of the strength of the electric field is shown as 6.45 V/m. Feel free to move the senor around and see how the strength and direction of the electric field changes. Keeping the position of the sensor the same, replace the positive charge of +1 nC with a negative charge of -1 nC, and observe for yourself what happens to the direction of the electric field vector on the sensor. Remember the relationship of direction of electric force and electric field from Ch 1. Below is slide 4 of Ch 18 part 2 notes.1. A +1 nC charge is place on a major grid point. At 1 m away (look at figure 3) to the right of the +1 nC charge along a straight line, place a sensor. At the location of the sensor what potential, in V, do you measure? a. Around 18 V, giving the magnitude of the electric field strength of around 36 V/m. b. Around 9 V, giving the magnitude of the electric field strength of around 9 V/m. c. Around 6 V, giving the magnitude of the electric field strength of around 4 V/m. d. Around 4.5 V, giving the magnitude of the electric field strength of around 2.25 V/m. 2. If you now measure the potential at 1 m away to the left of the +1 nC charge (along a straight line), do you expect to get the same answer as in question 1? a. No. b. Yes. c. Not enough information provided to answer the question.5. Place 4 +1 nC charges at the corner of a square with side 2 111. Place the voltage meter at the center of the square. What is the potential that you measure? a. Around 0 V b. Around 4 nV 0. Around 25 V k ' 6. Leave the voltage meter at the center of the square. Now remove (drag to box, see Figure 2) one of the + 1 nC charge at any of the corners (so you should have only 3 corners with +1 nC charge). What is the potential that you measure at the center now? a. Around 0 V b. Around 25 V