How far from a -7.20 uC point charge must a +2.30 µC point charge be placed in order for the electric potential energy of the pair of charges to be -0.300 J? (Take the energy to be zero when the charges are infinitely far apart.)
How far from a -7.20 uC point charge must a +2.30 µC point charge be placed in order for the electric potential energy of the pair of charges to be -0.300 J? (Take the energy to be zero when the charges are infinitely far apart.)
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How far from a -7.20 uC point charge must a +2.30 uC point charge be placed in order for the electric
potential energy of the pair of charges to be -0.300 J? (Take the energy to be zero when the charges are
infinitely far apart.)
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Concept
The electric potential energy of the two charges q1 and q2 at distance r is given by
Where k = Coulomb's constant = 9 × 109 N.m2C- 2
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