Assuming potential energy at infinite separation is zero, what is the Potential Energy of a two charge system if the charges are both +10C and are separated by 10m?
9×1010J
The question has asked us to assume potential energy at infinity to be zero. Then we know by definition, the potential energy of a system of 2 charges at a distance r is given by,
PE=kQprIn this case,PE=9×109×10×1010PE=9×1010J