Module 10: Chapter 10: Magnetism Discussion

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This discussion aligns with the following Module 10: Chapter 10: Magnetism objectives:

Define: magnetic force (CLO1)(CLO2)(CLO3)
Explain the effects of magnetic fields on moving charge (CLO2)(CLO3)
Describe and differentiate between: DC and AC current. (CLO2)(CLO3)
Explain how a transformer works, and solve problems using the transformer formula. (CLO2)(CLO3)(CLO5)
Describe how electric motors work and the role of magnetism in their function. (CLO2)(CLO3)

Do not start a new thread. Simply reply to my posting.

Be sure to comment on at least two of your classmates' postings. Your response should be at least 5 sentences long. This includes responses to classmates' posts. Your replies must be more than a simple phrase like "I agree" or "I like your answers". Replies should reflect why you agree or like what has been posted. Your replies must reflect a genuine effort to engage your fellow classmates regarding the comments provided or the problem that has been solved. Please think about the questions and your peers' responses and reply thoughtfully and courteously, according to netiquette rules. Use good English grammar, correct punctuation, and complete sentences. While the posts will mostly be judged by their thoughtfulness and completeness, I reserve the right to take off points for grammatical errors, especially if they interfere with the clarity of your post.

Your initial posting is due on Monday by 11:59 pm CST. Your responses to 2 of your classmates are due on Saturday by 11:59 pm CST.

This discussion is worth a maximum of 10 points. The rubric for the discussion is in the Syllabus

Please post your answers and replies to the discussion questions below

What is magnetism?
Describe what happens when you move two unlike magnetic poles closer together. Draw a diagram to illustrate your answer.
Describe how a compass needle moves when it is placed in a magnetic field.
Predict how the properties of a bar magnet would change if it were broken in half.
Use the magnetic domain model to explain why a magnet sticks to a refrigerator door.
Describe two ways you could change the strength of the magnetic field produced by an electromagnet.
Explain why it is necessary to continually reverse the direction of current flow in the coil of an electric motor.
Compare and contrast a generator with an electric motor.
Explain why the output voltage from a transformer is zero if a direct current flows through the primary coil.
Explain why electric current produced by power plants is transmitted as alternating current

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