<% ' FP_ASP ASP Automatically generated by a Frontpage Component. Do not Edit. On Error Resume Next Session("FP_OldCodePage") = Session.CodePage Session("FP_OldLCID") = Session.LCID Session.CodePage = 1252 Err.Clear strErrorUrl = "" If Request.ServerVariables("REQUEST_METHOD") = "POST" Then If Request.Form("VTI-GROUP") = "0" Then Err.Clear Set fp_conn = Server.CreateObject("ADODB.Connection") FP_DumpError strErrorUrl, "Cannot create connection" Set fp_rs = Server.CreateObject("ADODB.Recordset") FP_DumpError strErrorUrl, "Cannot create record set" fp_conn.Open Application("Quiz_E_B_Fields_ConnectionString") FP_DumpError strErrorUrl, "Cannot open database" fp_rs.Open "Results", fp_conn, 1, 3, 2 ' adOpenKeySet, adLockOptimistic, adCmdTable FP_DumpError strErrorUrl, "Cannot open record set" fp_rs.AddNew FP_DumpError strErrorUrl, "Cannot add new record set to the database" Dim arFormFields0(21) Dim arFormDBFields0(21) Dim arFormValues0(21) arFormFields0(0) = "Efield_right" arFormDBFields0(0) = "Efield_right" arFormValues0(0) = Request("Efield_right") arFormFields0(1) = "unique" arFormDBFields0(1) = "unique" arFormValues0(1) = Request("unique") arFormFields0(2) = "path_E_B" arFormDBFields0(2) = "path_E_B" arFormValues0(2) = Request("path_E_B") arFormFields0(3) = "Bfield_up" arFormDBFields0(3) = "Bfield_up" arFormValues0(3) = Request("Bfield_up") arFormFields0(4) = "Bfield_right" arFormDBFields0(4) = "Bfield_right" arFormValues0(4) = Request("Bfield_right") arFormFields0(5) = "Bfield_into" arFormDBFields0(5) = "Bfield_into" arFormValues0(5) = Request("Bfield_into") arFormFields0(6) = "Efield_into" arFormDBFields0(6) = "Efield_into" arFormValues0(6) = Request("Efield_into") arFormFields0(7) = "Bfield_down" arFormDBFields0(7) = "Bfield_down" arFormValues0(7) = Request("Bfield_down") arFormFields0(8) = "Efield_up" arFormDBFields0(8) = "Efield_up" arFormValues0(8) = Request("Efield_up") arFormFields0(9) = "Efield_down" arFormDBFields0(9) = "Efield_down" arFormValues0(9) = Request("Efield_down") arFormFields0(10) = "Efield_out" arFormDBFields0(10) = "Efield_out" arFormValues0(10) = Request("Efield_out") arFormFields0(11) = "Name" arFormDBFields0(11) = "Name" arFormValues0(11) = Request("Name") arFormFields0(12) = "thomson_E_B" arFormDBFields0(12) = "thomson_E_B" arFormValues0(12) = Request("thomson_E_B") arFormFields0(13) = "path_B" arFormDBFields0(13) = "path_B" arFormValues0(13) = Request("path_B") arFormFields0(14) = "Bfield_out" arFormDBFields0(14) = "Bfield_out" arFormValues0(14) = Request("Bfield_out") arFormFields0(15) = "thomson_B" arFormDBFields0(15) = "thomson_B" arFormValues0(15) = Request("thomson_B") arFormFields0(16) = "Bfield_left" arFormDBFields0(16) = "Bfield_left" arFormValues0(16) = Request("Bfield_left") arFormFields0(17) = "Efield_left" arFormDBFields0(17) = "Efield_left" arFormValues0(17) = Request("Efield_left") arFormFields0(18) = "path_E" arFormDBFields0(18) = "path_E" arFormValues0(18) = Request("path_E") arFormFields0(19) = "thomson_E" arFormDBFields0(19) = "thomson_E" arFormValues0(19) = Request("thomson_E") arFormFields0(20) = "Did_own_work" arFormDBFields0(20) = "Did_own_work" arFormValues0(20) = Request("Did_own_work") FP_SaveFormFields fp_rs, arFormFields0, arFormDBFields0 If Request.ServerVariables("REMOTE_HOST") <> "" Then FP_SaveFieldToDB fp_rs, Request.ServerVariables("REMOTE_HOST"), "Remote_computer_name" End If If Request.ServerVariables("HTTP_USER_AGENT") <> "" Then FP_SaveFieldToDB fp_rs, Request.ServerVariables("HTTP_USER_AGENT"), "Browser_type" End If FP_SaveFieldToDB fp_rs, Now, "Timestamp" If Request.ServerVariables("REMOTE_USER") <> "" Then FP_SaveFieldToDB fp_rs, Request.ServerVariables("REMOTE_USER"), "User_name" End If fp_rs.Update FP_DumpError strErrorUrl, "Cannot update the database" fp_rs.Close fp_conn.Close FP_FormConfirmation "text/html; charset=windows-1252",_ "Form Confirmation",_ "Thank you for submitting the following information:",_ "Quiz_E_B_Fields.asp",_ "Return to the form." End If End If Session.CodePage = Session("FP_OldCodePage") Session.LCID = Session("FP_OldLCID") %> Reading Quiz: Acceleration and Free Fall

Reading Quiz: Interaction of Charged Particles with Electric and Magnetic Fields

Answers must be submitted by 9:00am Wednesday, February 20.

Read P3 Chapter 24 Section 2 + Chapter 26 Section 1.  Then answer the following questions:

Enter your last name, first initial:  

Click here to indicate that you have read the assigned material and are answering the reading questions on your own.

The questions below mostly involve Chapter 26 Section 1, but rely on your understanding of the material in Chapter 24 Section 2 as well. Before attempting these questions, study chapter 24 Section 2 carefully, especially the Example Problem on p. 573. You will need to know how to use the Third Right hand Rule.

1. In Figure 26-1, consider the situation when there is an upward electric force made by the deflection plates acting on electrons. In that situation, the direction of the electric field between the plates is

Up

Down

Towards the right

Towards the left

Into the page

Out of the page

2. Consider Figure 26-1 again. What direction magnetic field would make a downward magnetic force on electrons passing through the deflection plates ?

Up

Down

Towards the right

Towards the left

Into the page

Out of the page

3. What type of field(s) did Thomson actually use in his experiment to measure the charge/mass ratio of electrons ?

Electric only

Magnetic only

Both electric and magnetic

4. If a charged particle moves in a region that has a constant magnetic field, what is the shape of the particle's trajectory (assuming that the direction of the particle's velocity is initially perpendicular to the direction of the B field) ? (one word)

5. If a charged particle, initially moving to the right in Figure 26.1, enters the region between the vertical deflection plates in which there is a constant electric field in the downward direction, what is the shape of the particle's trajectory while it passes through the electric field ? (one word) hint: think about the analogy between electric and gravitational fields.

6. If a charged particle moves in a region containing both electric and magnetic fields, it is possible that the net force on the particle is zero i.e. that the electric and magnetic forces are balanced. This is only possible, though, if the particle has a unique (fill in the blank, one word)

that depends only on the strengths of the electric and magnetic fields. The shape of the particle's trajectory in this case is a (two words max) .

When you've finished, click on SUBMIT.
(Make sure you haven't skipped any questions unintentionally)