Activity 19
Name Melanie Mickens_______________________ Equipotential
Go to http://phet.colorado.edu/simulations/sims.php?sim=Charges_and_Fields and click on Run Now. Complete Part 1 for chapter 18 and part 2 and 3 for chapter 19.
Part 1: What is an equipotential line and how is this simulation related to work and energy? They are like contour lines on a map which trace lines of equal altitude.
1) Turn on “Show Numbers”
2) Place a positive 1 nano-coulomb charge near the center of the screen.
3) In the lower left of the screen is a meter for indicating electric potential, in volts, created by the charge that you introduced. Record the voltage and turn on “Plot”. 3.7 V
4) This line is much like a line on a geologic topo map. Explain the similarity. The similarity I notice is the circular graph with a noticeable center.
5) You are on the side of a hill with a topo map of the region. If you walked so that your trip follows a topo line you would be doing no work on your backpack. Why?. When using gravitational potential, you can collapse the mass of the Earth into a single point and measure the radius from that.
6) If a second charge were placed on this line (don’t do it), how much work is need to move it along the line? Double the original amount
7) Move the meter closer to the charge at the center of the screen. What is the new electric potential? Turn on plot again 2.4 V
8) Remember that electric potential is energy per charge (1 volt = 1 Joule/Coulomb). Is electric potential a vector or a scalar? vector
9) If a second positive charge were introduced and moved from the first equipotential line created to the second line (closer to the charge), would this involve positive or negative work? negative
10) If the second positive charge were moved away from the first Positive charge, would this involve positive or negative work. positive
11) When energy was studied earlier in the year, a connection was found between kinetic energy, potential energy, positive work,
Go to http://phet.colorado.edu/simulations/sims.php?sim=Charges_and_Fields and click on Run Now. Complete Part 1 for chapter 18 and part 2 and 3 for chapter 19.
Part 1: What is an equipotential line and how is this simulation related to work and energy? They are like contour lines on a map which trace lines of equal altitude.
1) Turn on “Show Numbers”
2) Place a positive 1 nano-coulomb charge near the center of the screen.
3) In the lower left of the screen is a meter for indicating electric potential, in volts, created by the charge that you introduced. Record the voltage and turn on “Plot”. 3.7 V
4) This line is much like a line on a geologic topo map. Explain the similarity. The similarity I notice is the circular graph with a noticeable center.
5) You are on the side of a hill with a topo map of the region. If you walked so that your trip follows a topo line you would be doing no work on your backpack. Why?. When using gravitational potential, you can collapse the mass of the Earth into a single point and measure the radius from that.
6) If a second charge were placed on this line (don’t do it), how much work is need to move it along the line? Double the original amount
7) Move the meter closer to the charge at the center of the screen. What is the new electric potential? Turn on plot again 2.4 V
8) Remember that electric potential is energy per charge (1 volt = 1 Joule/Coulomb). Is electric potential a vector or a scalar? vector
9) If a second positive charge were introduced and moved from the first equipotential line created to the second line (closer to the charge), would this involve positive or negative work? negative
10) If the second positive charge were moved away from the first Positive charge, would this involve positive or negative work. positive
11) When energy was studied earlier in the year, a connection was found between kinetic energy, potential energy, positive work,