A small positively charged sphere and a small negatively charged sphere are initially at rest separated by a distance di. The two spheres are then moved towards each and then stopped so that they are again at rest a distance d.; /2 apart. What happens to the electric potential energy of the system of two spheres, and why? The electric potential energy increases because an external force does negative work on the system. The potential energy decreases because an external force does negative work on the system. O The electric potential energy increases because an external force does positive work on the system. O The electric potential energy decreases because an external force does negative work on the system. O The electric potential energy decreases because an external force does positive work on the system. O The electric potential energy does not change because energy is conserved and the Work is zero.
A small positively charged sphere and a small negatively charged sphere are initially at rest separated by a distance di. The two spheres are then moved towards each and then stopped so that they are again at rest a distance d.; /2 apart. What happens to the electric potential energy of the system of two spheres, and why? The electric potential energy increases because an external force does negative work on the system. The potential energy decreases because an external force does negative work on the system. O The electric potential energy increases because an external force does positive work on the system. O The electric potential energy decreases because an external force does negative work on the system. O The electric potential energy decreases because an external force does positive work on the system. O The electric potential energy does not change because energy is conserved and the Work is zero.
Transcribed Image Text:A small positively charged sphere and a small negatively charged sphere are initially at rest separated by a distance di. The two spheres
are then moved towards each and then stopped so that they are again at rest a distance d.; /2 apart.
What happens to the electric potential energy of the system of two spheres, and why?
The electric potential energy increases because an external force does negative work on the system.
The potential energy decreases because an external force does negative work on the system.
O The electric potential energy increases because an external force does positive work on the system.
O The electric potential energy decreases because an external force does negative work on the system.
O The electric potential energy decreases because an external force does positive work on the system.
O The electric potential energy does not change because energy is conserved and the Work is zero.
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