Two identical circular rings A and B of radius 30 cm are placed coaxially with their axes
Channel: Doubtnut
Date: 23/08/2020

Two identical circular rings A and B of radius 30 cm are placed coaxially with their axes horizontal in a uniform electric field `E. = 10^(5)N//C` directed vertically upward as shown in figure. Distance between centres ofthese rings A and B is40cm. Ring A has a positive charge `10muC` while ring B has a negative charge of magnitude `20muC`. A particle of mass `100g` and carrying a positive charge `10muC` is released from rest at the centre of the ring A. Calculate its velocity when it has moved a distanceof40cm. Take `g= 10m//s^(2)