Calculating Electric Field from Force on a Charge

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Homework Help Overview

The problem involves calculating the electric field based on the force experienced by a charge. The specific context includes a charge of 4C subjected to a force of 45i N, raising questions about the relationship between force and electric field.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss the application of the formula F=qE and question the interpretation of the force's components, particularly the meaning of "i" in the force vector.

Discussion Status

Some participants express uncertainty about the calculations and the interpretation of the components, while others suggest verifying the values used in the calculations. There is no clear consensus on the correctness of the answers provided.

Contextual Notes

Participants are considering the implications of the charge and force values, and there is a suggestion to check the correctness of these values as part of the discussion.

phy43
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Homework Statement


A 4C charge experiences 45i of force. What is the electric field at the charge?


Homework Equations


F=qE --> E=F/q


The Attempt at a Solution


Q=4
F=45i 0j

I don't really know how to find the actual force from this component without an angle or anything.

E=45/4 = 11.25.. this is the wrong answer
 
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It looks right to me. What does the "i" mean in "45i"? If it means the x direction, then you may need an "i" on the 11.25, too.
 
i is the x-component and for some reason the answer is 14i N/C, but i don't know why
 
Check the 4 C and the 45 N; if they are correct then your answer is correct and the 14 is wrong. It should be reported to whoever marks your work.
 

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