A vertical electric field of magnitude 4.9 × 105N/C just prevents a water droplet of a mass 0.1g from falling. The value of charge on the droplet will be :
(Given g = 9.8 m/s2)
1
1.6 × 10−9C
2
2.0 × 10−9C
3
3.2 × 10−9C
4
0.5 × 10−9C
A vertical electric field of magnitude 4.9 × 105N/C just prevents a water droplet of a mass 0.1g from falling. The value of charge on the droplet will be :
(Given g = 9.8 m/s2)