A 5.0-nC charge is at (0, 0) and a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the electric potential energy of a 1.0-nC charge at point (0, 4.0 m)?
Answer

1.5 × 10-8 J

3.6 × 10-9 J

1.1 × 10-8 J

7.7 × 10-9 J

Question

A 5.0-nC charge is at (0, 0) and a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the electric potential energy of a 1.0-nC charge at point (0, 4.0 m)?
Answer
		
1.5 × 10-8 J
		
3.6 × 10-9 J
		
1.1 × 10-8 J
		
7.7 × 10-9 J

anonymous · Answer

Do you know the expression for electrostatic potential energy due to three charge configuration!?

anonymous · Answer

@renadwinick

anonymous · Answer

no..........

anonymous · Answer

do you know expression for electrostatic potential energy for two charge system.. !?

vincent-lyon.fr · Answer

Quote: "-2.0-nC"
@Mashy: What does this mean?

anonymous · Answer

@Vincent-Lyon.Fr 
it just means its a -2 nano Coulomb charge :D