Ok, Ok, OK!

These threatening emails are getting serious!

Here are the old lecture slides (Dr. Gauthier's) concerning Polarization, for those who missed the class.

Final Exam Redacted Version

Probably by the time you've studied every possible permutation of the questions in the redacted version of the exam you will be more than ready for the real exam.

Test #2 Remarking and Solutions

Folks,

Deepak was last seen under a bus.

Ok, he made amends and has corrected the marking.

The average mark is now 69%, still not my cup o' tea, but not bad. I will return the tests tomorrow.

Meanwhile, you might want to check out the official solutions.

Other PA Sessions this week.....

....should go to their usual location (4124ME).

Please go to room 340 in the Azrieli Pavillion today for your PA session. Note that is not the Azrieli Theatre --- don't get confused.

Upcoming Lectures

Some slide material based on Dr. Gauthier's old slides may be useful for the upcoming lectures. I will probably modify/skip these on the fly during the lecture. Depends on how hot the room is!

March 21, 2012 Lecture Summary

We looked at:

Magnetic Vector Potential

The Magnetic Dipole

Force on a Magnetic Dipole

Ring Of Current Mathematica Solution

Here is the Mathematica solution for the magnetic field generated by a ring of current, on the axis of the ring of current.

PASS Mock Test #2

Rachel sent me word that there will be a mock test tonight in 112PA starting at 5:30pm. The mock test will be repeated on Thursday starting at 1:30pm (I assume in the same location).

Sample Questions for the Midterm

Folks, as requested, here are a few questions to get you thinking:

Ohhhh.......So Now It's MY Fault?

Ok, I am not disagreeing. You're a smart bunch and I was fairly shocked at the scores.

Please leave some (anonymous) comments that will help me help you to score better on the next test.

Let me know what you think was wrong with the first test, or why the scores were so low.

I am listening.

Solutions to Test #1

I posted the solutions to the first test. Please review them, and let me know if you see any problems.

Lecture Summary for March 2, 2012

Today we discussed again Postulate #1 for magnetostatics, and what sort of problems can be tackled using it.

We moved on to Postulate #2 for magnetostatics. We did a few examples of problems or situations involving forces on current-carrying conductors.

We looked at Lorentz's force equation.

We went over the solutions to Test #1.

Lecture Summary for February 29, 2012

First, for some reason unknown to me I apparently called the cross product "curl" a number of times today. Must be something in my tea. We covered curl last month, and although the curl can be expressed in terms of the cross product of nabla and the vector field of interest, curl is not the same as cross product. So mea culpa!

Today we covered basic units for magnetostatics, the first postulate of magnetostatics, force on a moving charge due to a magnetic field, and the Hall effect. We began the second postulate of magnetostatics.

For Friday, please review the second postulate as well as the Lorentz force equation. 

PA Sessions for the Week beginning March 7, 2012

This week's PA sessions will involve the following questions from Saiku, 5th Edition.

Curl: 3.31, 3.33
Current flow: 5.4, 5.5
Continuity equation: 5.29, 5.30
Fields at boundaries: 5.35, 5.39
Resistance: 6.23, 6.25
Capacitance: 6.41, 6.47

Poll Summary

There was actually a good turn out for the lecture preceding the break. I was pleasantly surprised. For the next few weeks leading up to Test #2, please ensure you come to class and focus on the material.

February 17, 2012 Lecture Summary

As promised, we covered the continuity equation, current flow, the electric field in conductors with current, and resistivity and conductivity.

For those of you who took an early break, we also covered:

Magnetostatics: Lorentz force law; Hall effect; Ampere's law; Curl of a vector field; The magnetic vector potential; The Biôt-Savart Law; Applications of the Biôt-Savart Law: current ring, solenoid; Energy stored in magnetostatic field.
Magnetic Fields in Matter: Magnetic dipoles; Diamagnetic, paramagnetic and ferromagnetic materials; Magnetic circuits.
Faraday's Law: Faraday’s law and induced EMF; Lenz's law; Eddy currents; Inductors

You might want to catch up on all that material during reading week.

Pre-Reading Week Lecture

Tomorrow's lecture will wrap-up electrostatics. We'll discuss the continuity equation, current flow, and resistivity. See you there. I know that you won't miss it for the world!

By Popular Demand....

.....well one person asked actually.

You can try the home edition of today's test.

Pre-Test Jitters?

I have to say, this is the first time in 11 years of teaching at Carleton that I have not been inundated with emails about an upcoming test. Weird! You folks must have ice water in your veins.

I'll be in my office from noon to 3pm for those who need any last minute help.