The electrostatic potential energy of two spheres

AI Thread Summary
The discussion focuses on calculating the electrostatic potential energy between two charged spheres using the formula ##\frac{k Q_1 Q_2}{L}##. Substituting ##Q_1 = 4Q## and ##Q_2 = 4Q## results in an overall factor of 16 in the energy calculation. The participants confirm that the energy increases when comparing the initial and final potential energies of the spheres. The conversation encourages exploring the relationship between charge and potential energy changes. Understanding these concepts is crucial for solving related physics problems.
Fatima Hasan
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Homework Statement


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Homework Equations


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The Attempt at a Solution


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Is my answer correct ?
 

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Yes.
 
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If you substitute ##Q_1 = 4Q## and ##Q_2 = 4Q## into ##\frac{k Q_1 Q_2}{L}##, do you get an overall factor of 4 in the answer?
 
TSny said:
If you substitute ##Q_1 = 4Q## and ##Q_2 = 4Q## into ##\frac{k Q_1 Q_2}{L}##, do you get an overall factor of 4 in the answer?
##\frac{16 k Q}{L}## .
 
Fatima Hasan said:
##\frac{16 k Q}{L}## .
Yes, if you put a square on the Q.
 
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If you like puzzles, compare the initial potential energy of the two spheres with the final potential energy of the two spheres. Did the energy increase, decrease, or stay the same?
 
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