Essay about Physics CH18 and CH 19

733 WordsJul 4, 20143 Pages
Name ____________________________________ 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? 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”. 3.7V 4) This line is much like a line on a geologic topo map. Explain the similarity. These two are sounded by the curve. 5) You…show more content…
What is the connection? Kinetic and potential energy are convertible while negative work is done by consuming energy, and positive work is done by absorbing energy. 12) Click on “Clear All” Part 2 What is the relationship between the electric potential at a point in space and the distance from an electric charge? 1) Place a positive 1 nano-coulomb charge on the screen. 2) Turn on “Show numbers” 3) Turn on “tape measure”. 4) Use the tape measure to find and record the distance from the charge to the equipotential sensor. 1.94m 5) Record the voltage as indicated on the equipotential sensor. 4V 6) Change the location of the positive charge to at least six widely different distances from the equipotential sensor. Record the voltage reading and distance at each location. 2.9V 2.7m 2.6V 3.1m 6.6V 0.9m 3.8V 2.3m 3.3V 2.7m 1.8V 4.8m 7) Use “Excel” to plot these data sets. 8) What is the mathematical relation between these variables? Roughly linear. (could be 2 degrees) 9) Click on “Clear All” Part 3 What are the characteristics of the electric field sensors? 1) Place a positive 1 nano-coulomb charge at the center of the screen. 2) Click on “Show Numbers. 3) Bring out an electric field senor. 4) What are electric field units? 23.4V/m -10 degrees 5) Is the electric field a scalar or a vector? vector 6) To do its job, the electric field senor should