Minimum Work Needed to Bring 2 charges from distance infinity

AI Thread Summary
To calculate the minimum work needed to bring two charged particles from infinity to a distance of 2 m, one must consider the change in electric potential energy. The relevant equations include Coulomb's law for the force between the charges and the formula for work done in moving charges, which relates to potential energy. The positive charge is 3.0 x 10^-5 C and the negative charge is 1.35 x 10^-5 C. By applying these equations, the problem can be solved by calculating the potential energy at the final distance and subtracting the potential energy at infinity. Understanding these principles will help in determining the minimum work accomplished in this process.
KMc19
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Two charged particles are brought together from a great distance (r=infinity) to a distance of 2 m. The particle has a positive charge of 3.0 x 10^-5 C and the second has a negative charge of 1.35 x 10^-5 C. What minimum work was accomplished in this process?

I can't for the life me figure out how I should set up the equation and solve!
Please help, it's driving me crazy!
 
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KMc19 said:
Two charged particles are brought together from a great distance (r=infinity) to a distance of 2 m. The particle has a positive charge of 3.0 x 10^-5 C and the second has a negative charge of 1.35 x 10^-5 C. What minimum work was accomplished in this process?

I can't for the life me figure out how I should set up the equation and solve!
Please help, it's driving me crazy!

What are the Relevant Equations? (that was asked on the Homework Help Template that you deleted when you posted your question...)

What is the equation for the force between two charged particles? What are some equations relating force and work?
 


You should consider the change in potential energy of the system. (And also use the template) I think after filling out the equations part of the template you would have answered the question for yourself.:smile:
 

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