Magnetism Unit Goals

Magnetism (Ch. 24,25)
Homework due 7/4/2015
Test date: Last day of class

Goals:
1. Explain the arrangements responsible for permanent magnets.

2. Describe what affects the strength of magnetic forces and an electromagnet’s field.

3. Describe the shape of magnetic fields around permanent magnets and charge carrying wires.

4. Describe the causes and beneficial effects of the Earth’s magnetic field.

5. Predict the direction of magnetic forces and induced currents.

6. Describe how magnetic forces are applied in electric motors and generators.

7. Determine currents and voltages produced by transformers.

Answer Key for the Semester Review

Second Semester Review Answers (Blank Questions at End)

Notes on final Homework Assignment

The homework questions are generally written for use with conventional current, and you must adjust your answers accordingly.  For example, if it says that the current is flowing East to West, that means that conventional (proton) current is flowing East to West and when you apply the left hand rules you have to point your finger in the opposite direction, East.

Or, if the question asks you to determine the direction of a current and you use the left hand rule to determine that electrons are flowing North, then to get the right answer you have to indicate that the current that they want, the conventional current, is going in the opposite direction, South.

I think this may apply to questions 4, 5, 6, 7, 8, 9, 14, and 15.

Seniors may do this assignment if they want, but do not have to.

Electricity Review Key

Electricity Review Key 2014

Lab 7 - The Resistance of Light Bulbs

Last lab write-up of the year.
Copy the questions from the linked document and answer them in your lab document.

https://docs.google.com/document/d/1phWUo9RAyrRZdyMLc8q_p6kHhW2aP-dgJtW5K1Rq3n4/edit?usp=sharing