Warming up on Ampere's Law

This assignment is due before 9 AM, Wednesday, October 24th, 2000.

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The following three questions refer to the material you were to read in preparation to the lesson. Questions one and two require you to write a three or four sentence response. Number three is a multiple choice question. Click in the appropriate circle.

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1.

The magnetic field can often be calculated easily by using Ampere's law. This law is similar to Gauss' Law where we had to use an imaginary "Gaussian Surface." Now, we must use an imaginary "Amperian loop." What are the essential features of an Amperian loop?



2.

You can make a good approximation to a "long solenoid" by buying a 50 yd. spool of wire and winding it carefully (nice even coils) around a cylindrical core (say a broomstick), then removing the core. Estimate the maximum magnetic field that can be produced in such a solenoid.





3.


If a square Amperian path is used and a current of 3 A is carried through the center of the square by a thin wire, then over one side of the square is given by

9.4 X 10-7 T-m

1.2 X 10-5 T-m

Zero T-m

None of the above.

Below is a space for your thoughts, including general comments about today's assignment. What was hard or confusing (or cool)? What would you like to spend extra time on in class? Do you see how this subject fits in with the others we have discussed?




You may change your mind as often as you wish. When you are satisfied with your responses click the SUBMIT button.

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