Two charges of magnitude `5 nC and -2 nC` are placed at points (2cm,0,0) and (x cm,0,0) in a region of space. Where there is no other external field. If the electrostatic potential energy of the system is `-0.5 muJ`. What is the value of x ?

Two charges of magnitude `5 nC and -2 nC` are placed at points (2cm,0,

1.	Two charges of magnitude `5 nC and -2 nC` are placed at points (2cm,0,0) and (x cm,0,0) in a region of space. Where there is no other external field. If the electrostatic potential energy of the system is `-0.5 muJ`. What is the value of x ?
Answer» Correct Answer - x = 4cm `U = (1)/(4pi in_(0)) (q_(1) q_(2))/(r )` `-5xx10^(-6) = (9xx10^(9)xx5xx10^(-9)xx(-2)xx10^(-9))/((x-2)xx10^(-2))` `x - 2 = (9xx10^(9)xx5xx10^(-9)xx -2xx10^(-9))/(-0.5xx10^(-6)xx10^(-2))` On solving, `x = 4cm`

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Two charges of magnitude `5 nC and -2 nC` are placed at points (2cm,0,0) and (x cm,0,0) in a region of space. Where there is no other external field. If the electrostatic potential energy of the system is `-0.5 muJ`. What is the value of x ?

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