First slide
Motion of charged particle in uniform electric field

An electric field is acting vertically upwards. A small body of mass 1 gm and charge  -1μC  is projected with a velocity 10 m/s at an angle 450 with horizontal. Its horizontal range is 2m then the intensity of electric field is : (g = 10 m/s2)


As charge is negative and the electric field is vertically upwards the total force acting on the charge is vertically downwards. 
 Hence the net acceleration downwards is g+qEm


E=40×103  N/C

Get Instant Solutions
When in doubt download our app. Now available Google Play Store- Doubts App
Download Now
Doubts App