Struggling with Questions 5, 7, & 8? Let me help!

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Homework Help Overview

The discussion revolves around understanding specific questions from a physics assignment, particularly focusing on questions 5 and 8, which involve concepts related to magnetism and electromagnetism.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants are attempting to clarify their understanding of the answers provided in the textbook for questions 5 and 8. There are inquiries about the reasoning behind the answers and the properties of materials used in electromagnets.

Discussion Status

The discussion is ongoing, with participants seeking clarification on specific answers and the underlying principles. Some guidance has been offered regarding the properties of iron in relation to electromagnets, indicating a productive exploration of the topic.

Contextual Notes

There is a mention of needing confirmation on the choice of materials for question 8 and uncertainty about the definitions and properties related to permanent magnets and electromagnets.

StevenA
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Need help with comprehending questions 5,7,and 8 please.
 
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It would help if you told us exactly what you needed help with in each question. What don't you comprehend?
 
Well the answer for 5a is south to north and 5b is west but I don't know how the book came up with that answer. Also, in question 8 I chose an iron rod because it is a permanent magnet that's extremely strong for it's size, but I need conformation for my answer.
 
StevenA said:
Well the answer for 5a is south to north and 5b is west but I don't know how the book came up with that answer.

What does it say for the basic laws for current flowing through a wire?

Also, in question 8 I chose an iron rod because it is a permanent magnet that's extremely strong for it's size, but I need conformation for my answer.

Ah, but the iron rod ISN'T a permanent magnet! But what is it about iron that makes it good to use in an electromagnet? What does your book say about inserting rods into an electromagnet to form its core?
 

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