Electric Fields And Gauss Law

Step 1: Use Newton's second law of motion.
The force on the electron due to the electric field is
given by:
where is the charge of the electron and is the electric field strength.
Step 2: Apply Newton's second law.
According to Newton's second law: where is the mass of the electron and is the acceleration. Equating the two expressions for force:
Step 3: Conclusion.
Thus, the acceleration of the electron is .
Conclusion:
The correct answer is (B) .