Identifying Direction of Induced Current - Physics Exam Prep

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Discussion Overview

The discussion revolves around identifying the direction of induced current in the context of a physics exam preparation. Participants explore methods and steps to determine this direction, referencing concepts such as magnetic flux and Lenz's law.

Discussion Character

  • Homework-related
  • Technical explanation

Main Points Raised

  • One participant seeks guidance on identifying the direction of induced current, expressing difficulty in the process.
  • Another participant outlines a series of steps, including defining a positive direction, determining the direction of increasing magnetic flux, applying Lenz's law, and using the right-hand rule to find the direction of induced current.
  • A third participant mentions the possibility of creating diagrams to aid in understanding the concepts discussed.
  • A later reply questions the clarity of the first step regarding defining the positive direction of the surface enclosed by the loop.

Areas of Agreement / Disagreement

There is no consensus on the clarity of the steps provided, as one participant seeks further clarification on the initial step. The discussion remains unresolved regarding the best approach to identify the direction of induced current.

Contextual Notes

The discussion includes assumptions about the definitions of positive direction and magnetic flux, which may not be universally understood. The steps provided may depend on specific contexts or interpretations.

bayan
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Hi guys.
I have a physics exam coming up in about 4 days. I have tried to learn how to identify the direction of induced current. But still I have to guess the direction which is not helpfull.
I was wondering if you could give me a link that illustrates how to identfy the direction or perhaps write down the steps that you would do in order to identify the direction of induced current.
thank you in advance
 
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1 - Define your positive direction of the surface enclosed by the loop.
2 - find which direction the magnetic flux is increasing. If the magnet is pushed into a loop with N-pole at front(along the positive direction you defined from step 1), the magnetic flux is increasing.
3 - Len'z law says, your induced current has to create magnetic field in the opposite direction of step two.
4 - Now use right hand rule to figure out the directino of induced current. Your thumb will point to the direction you found in step 3. Rest of your finger curls along the directino of induced current.

But at any rate, this might still be confusing.
 
thanx. Might have to make some simple digrams for my self to fully learn this :D
 
"Define your positive direction of the surface enclosed by the loop."
Sorry, what does this mean>?
 

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