Two Point Charges, a and B, Lie Along a Line

question 39

Multiple Choice

Two point charges, A and B, lie along a line separated by a distance L. The point x is the midpoint of their separation.
-Which combination of charges would yield the greatest repulsive force between the charges?

• A)-2q and -4q
• B)+1q and -3q
• C)-1q and -4q
• D)-2q and +4q
• E)+1q and +7q

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