Are My Electric Potential Answers Correct for These 7 Cases?

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Homework Help Overview

The discussion revolves around electric potential and electric fields, specifically examining the behavior of test charges in various scenarios involving positive and negative source charges. The original poster presents multiple cases where they analyze the direction of test charges relative to electric fields and the corresponding changes in electric potential.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to classify the movement of test charges in relation to electric fields and assess whether the electric potential increases or decreases in each case. Some participants question the correctness of these classifications, particularly regarding the behavior of positive test charges.

Discussion Status

Participants are actively engaging with the original poster's scenarios, with some seeking clarification on specific cases. There is an indication of productive discussion as participants explore different interpretations of the electric potential changes, although no consensus has been reached on the correctness of the answers provided.

Contextual Notes

The original poster references specific cases and examples, including a scenario used by a professor, which may influence the assumptions and interpretations being discussed. There is a focus on ensuring the accuracy of the answers in a homework context.

gazepdapi1
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I need you guys to check some of my answers for the following problem, which has 7 different cases. Each case has to be answered by stating the direction of the test charge with the electric field and whether the electric potantial decreases from point a to b. Below are two sample pictures of what I'm describing.

http://img256.imageshack.us/img256/6502/qqug4.jpg"

here are the different scenarios:

plus charge emitting a field line to the right, point a to b, where a is closser to the charge. test charge is moving towards the plus charge
-I said test charge goes against E, and P. increases

same E field, negative test charge moves away from the plus charge
-I said negative test charge moves along E, and P. decreases

same E field, negative test charge moves toward plus charge
-I said negative test charge moves against E, P. increases

now there is a negative charge emmiting a field line coming from the right toward itself. test charge moves away from the E field
-I said test charge moves against E, P. increases

same E field, test charge moves toward E field.
-I said test charge move along E, P. decreases

same E field, negative test charge moves away from the E filed.
-I said negative test charge goes against E, P. increases

same E field, negative test charge moves toward E field
-I said negative test charge goes along E, P. increases

I hope that's clear
thanks a lot guys
 
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what about +ve test charge moving away from the +ve source charge?
 
mjsd said:
what about +ve test charge moving away from the +ve source charge?

The professor used that as an example, so i don't need it.
good eye though
 
can anyone tell me if these are correct or not please?
 

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