What is the x-component of the electric field at the origin?

AI Thread Summary
To find the x-component of the electric field at the origin due to a positive charge of 2.90 μC experiencing a force of 65.5 x 10^-6 N, the correct approach is to use the relationship F = Eq, where F is the force and E is the electric field. The initial attempt incorrectly focused on finding the distance using the wrong formulas. Instead, the solution requires directly applying the formula for electric field strength. The discussion emphasizes using the correct equations to solve for the electric field rather than the force. The key takeaway is to focus on the electric field formula rather than the force calculations.
n77ler
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[SOLVED] Electric force and charge

Homework Statement



A positive charge of 2.90 μC is at rest at the origin. An electric force of 65.5 x 10-6 N acts on the charge as shown in the figure below. What is the x-component of the electric field at the origin?

Homework Equations



F=kQ/r^2
E=kq1q2/r^2

The Attempt at a Solution



I subbed the charge and force into F=k Q/r^2 and solved for r thinking I could dos somehting with it but it is a hugeeee number so I doubt I am doing it right.
 

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F=Eq, use sin and cosine to find the components.
 
Wrong formulas …

Hi n77ler!

You have the wrong formulas!

Not every electric charge problem asks you to find the force :frown: - in this case, they've told you what the force is, and only asked you to find the field!

Just use SWFanatic's formula. :smile:
 

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