A protons of mass `m` charge `c` is released form rest in a uniform electric field of strength `E` .The time taken by it to travel a distance `d` in the field is

A protons of mass m charge 2 e is released from rest in a uniform electric field of strength E .The time taken by it to travel a distance d in the field is..

A charge of mass .m. charge .2e. is released from rest in a uniform electric field of strength .E.. The time taken by it to travel a distance .d. in the field is

An electron of mass m and charge q is accelerated from rest in a uniform electric field of strength E. The velocity acquired by it as it travels a distance l is …..

An electron of mass m and charge q is accelerated from rest in a uniform electric field of strength E. The velocity acquired by it as it travels a distance l is

A proton and an alpha -particle start from rest in a uniform electric field. The ratio of times taken by them to travel the same distance in the field is