An electron released from rest at a distance of 4 meters from an infinite plane of positive charge experiences a constant electric field of 100 V/m. The force acting on the electron is calculated using the formula F = E * Q, resulting in a force of 1.6 x 10^-13 N. By applying Newton's second law (F = ma), the acceleration of the electron is determined to be 1.756 x 10^13 m/s². The kinematic equation V_f² = V_i² + 2ad is identified as the appropriate method to calculate the final velocity of the electron upon collision with the charged plane.
PREREQUISITESStudents studying electromagnetism, physics educators, and anyone interested in the dynamics of charged particles in electric fields.
kkrizka said:You are given the electric field, not the voltage at the point so you can't use conservation of energy. Remember, electric field * charge = force on charge. You can use this to find the force on the electron, and then use one of the kinematics equations so solve for the speed.