List of top Physics Questions on Electric charges and fields asked in Telangana State Engineering Agriculture & Medical CET

A proton and an α \alpha particle are both accelerated from rest in a uniform electric field. The ratio of works done by the electric field on the proton and the α \alpha -particle in a given time is?
Two identical balls having like charges placed at a certain distance apart, repel each other with a force F F . When they are brought in contact and then moved apart to a distance equal to half of their initial separation, the force of repulsion between them becomes 4.5F 4.5F . The ratio of the initial charges of the balls is: