Electric Potential: Calculating Work to Move Charge from P to Infinity

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Homework Statement



How do I calculate the amount of work needed to move a charge from point P to a position infinitely far away?


Homework Equations





The Attempt at a Solution

 
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Discussion

Since you haven't posted any work, let's just start with the first step. What is work defined as? How does work relate to electric potential?
 

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