How Do You Calculate the Potential Energy of a Charge in a Square Configuration?

AI Thread Summary
To calculate the potential energy of a charge in a square configuration, one must consider the contributions from each charged rod. The potential energy (U) can be derived from the formula U = k * (q1 * q2) / r, where k is Coulomb's constant, q1 and q2 are the charges, and r is the distance between them. In this case, the charge q = 1mC is at the center of a square formed by four rods, each with a charge of Q = 1mC and length L = 20cm. The distance from the center to each rod needs to be calculated to find the total potential energy. Understanding these principles and formulas is crucial for solving the problem effectively.
mattdespat
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Find the potential energy of a charge q= 1mC at the centre of the square made of 4 charged rods of L =20cm and Q=1mC each.


The Attempt at a Solution


I am having quite a bit of trouble with this question, the problem is I don't really know where to start. I feel once i get on the right path I will be able to get it.
 
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Let's start with this: do you know any formulas involving the potential energy?
 

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