11.6 Motion & Electric Fields Part 3

Lab: Positive Particle Moves Parallel to the Electric Field This lab consists of four parts. In Part A, you will examine the motion of a positively charged particle when it initially moves parallel to the electric field.  In Part B you will examine the motion of a positively charged particle when it initially moves perpendicularly to the electric field.  In Part C you will examine how a negatively charged particle will move when it starts perpendicular to the electric field.  Finally, in Part D you will try to get the particle to move with uniform motion.

 

Purpose - Part D

 

In this part of the lab activity you will use a computer simulation to collect data enabling you to answer the following question:

• If a particle is given an initial velocity perpendicular to an electric field, under what circumstance could this particle move un-deflected with uniform motion through the electric field?  Assume the electric field is the only field present.

Procedure

 

Step 1: If you still have the simulation open from this lab activity, continue with the next step.  Otherwise, re-open the Particle in an Electric Field simulation and enter the settings described in Step 1 of Part B.

 

Step 2: To return the particle to its initial position, press "rewind".

 

Step 3: Without changing the settings for the electric field or the velocity, what adjustment could you make so that the particle moves with only uniform motion when you release the particle?  Make the necessary adjustment and press "play"  to confirm your prediction.

 

Step 4: Use "rewind" to return to the initial settings.  Repeat the previous step, but use "pause" to stop the motion at the instant the particle starts to leave the display.  Use "Simulation Data"  to view information describing the particle in this location.

 

 

Self-Check Answer the following self-check (SC) question then click the "Check your work" bar to assess your response.

   

SC 18.

Identify the values on the data chart that confirm that the particle is only moving with uniform motion.