Electric Potential Energy

• opposite to the electric force: U increases
• same to electric force: U decreases
• electric potential - potential energy per unit charge
• electric potential - simply called as "potential"
• potential difference is also called voltage
• electric potential - scalar quantity, SI unit volt (V) 1V = 1J/C
• equipotential surfaces

  -potential is same at every point (V is constant)

  -perpendicular to electric field lines