Electric Potential and Potential Difference
"Voltage"
State Standard 5.2 A-E
Objectives
After studying the material of this chapter, the student should be able to:1. Write from memory the definitions of electric potential, and electric potential difference.
2. Distinguish between electric potential, electric potential energy, and electric potential difference.
3. Draw the electric field pattern and equipotential line pattern which exist between charged objects.
4. Determine the magnitude of the potential at a point a known distance from a point charge or an arrangement of point charges.
5. State the relationship between electric potential and electric field and determine the potential difference between two points a fixed distance apart in a region where the electric field is uniform.
6. Determine the kinetic energy in both joules and electron volts of a charged particle which is accelerated through a given potential difference.
7. Explain what is meant by an electric dipole and determine the magnitude of the electric dipole moment between two point charges.
8. Given the dimensions, distance between the plates, and the dielectric constant of the material between the plates, determine the magnitude of the capacitance of a parallel plate capacitor.
9. Given the capacitance, the dielectric constant, and either the potential difference or the charge stored on the plates of a parallel plate capacitor, determine the energy and the energy density stored in the capacitor.
- Day 53
- 1985 B2 Complete Practice Problem after derivation of V=kq/r
- magnetic abstraction to help answer e.
- students hold one magnet and move other in the field make analogies between the 2 situations
- Group Work Graded assignment 1989 #2
- HW:
- Day 54
- White Board & Discuss Previous HW
- Day 55 Test Fields Potential and Review Question
State Standard 5.2 A-E
Student Learning Objectives
- To observe the experimental evidence for electromagnetic induction.
- To understand the circumstances under which changing magnetic fields lead to induced currents.
- To understand how the movement of a conductor through a magnetic field leads to a motional emf.
- To understand and use Lenz’s law for induced currents.
- To use Lenz’s law and Faraday’s law to determine the direction and size of induced currents.
- To understand basic applications of electromagnetic induction to technology.
- Day 56
- Introduction to Electromagnetic Induction
- Discovery Experimentation activity
- 9v Battery/compass/ coil of wire
- Identify variables and qualitative interactions
- Defn relationships and quantities
- relate equations
- sample problem full abstraction
- HW: Read Electromagnetic Induction
I was not in school on friday 1/31 and i think there was homework assigned but i'm not sure what it was? the calendar says 1985 B3 while this says something else and i believe a packet or something was handed out in class? I'll check in tomorrow
ReplyDeleteIn reference to the worksheet that we got for homework tonight, is there any difference between an electron volt and a regular volt?
ReplyDelete-Kevin Meglathery
Also, should we account for any edge effect for part d?
Delete-Kevin Meglathery
1 eV is 1.60*10^-19 J
DeleteAn eV is an electron volt
DeleteAs for the edges effects, I checked and the electron doesn't spend enough time in between the plates to make it anywhere near them.
Delete(I might have gotten it wrong though)
For the homework, would the electron end up going in a straight diagonal line towards the positive charged plate or would it be a curved line like in a Position vs. Time graph with acceleration? In other words, are the plates making the electron accelerate in the y direction?
ReplyDeleteNot 100% sure John, but I think it would be curved. The electron is pulled towards the positive charge, and like a magnet, the pull is stronger when closer together. (But I would be wrong).
Deletethat depends... if its a point charge or uniform/constant E field. Its always constant between 2 II plate capacitors.
ReplyDeletealso here is a link to some more recent exams. the questions along with the solutions are posted...
ReplyDeleteWill the test be tomorrow?
DeleteNothing has told us otherwise, so I guess we should assume it's tomorrow.
DeleteIs there supposed to be a link under Mr. Crane's previous post? I don't see anything.
http://apcentral.collegeboard.com/apc/members/exam/exam_information/157189.html
DeleteSo is the test moved or is it tomorrow?
ReplyDeleteIt's tomorrow
DeleteThis comment has been removed by a blog administrator.
ReplyDeleteI wasn't in school today. Would anyone be able to tell me what I missed?
ReplyDeleteAmanda- Thursday we were given 15 more minutes to work on the test and then we began a new lab, on circuits. We didn't finish the lab though and many people were absent.
ReplyDeleteDoes anybody know whether AP is expected to complete the questions posted on the calendar or if we are not there yet and its just a repeat from last year?