An electron is observed to accelerate in the -z direction with an acceleration of 4.3 x 1016 m/s2. Explain how to use the definition of electric field to determine the electric field at this location. O Use Newton's third law to calculate the force on the electron, and use F = q to calculate the electric field at the location O O 0 of the electron. Use superposition principle to calculate the force on the electron, and use = q to calculate the electric field at the location of the electron. Use Newton's first law to calculate the force on the electron, and use F = q to calculate the electric field at the location of the electron. Use Coulomb's force law to calculate the force on the electron, and use F location of the electron. = q E to calculate the electric field at the Use Newton's second law to calculate the force on the electron, and use F = q to calculate the electric field at the location of the electron. Give the direction and magnitude of the field. magnitude direction N/C