Practice Problems 1. What is the magnitude of an electric field that exerts a force of 5.0 x 104 N on a charge of 1.0 uC? 2. How much charge experiences a force of 5.0 x 10-3 N due to an electric field of 10N/c ?Practice Problems 1. What electric potential results in an electric potential energy of 5.0 x 10-3 J when 1 uC of charge is placed? 2. The electric potential at a point is 100 V. What is the electric poten- tial energy when a charge of 1.0 uC is placed at the point?Sample Problem 3 Two objects containing different types of charges are released at a certain distance from each other. How will they move? How does the electric potential energy change dur- ing their motion