Question

A vertical electric field of magnitude 4.9×105 NC-1 just prevents a water droplet of mass 0.1 g from falling. What is the charge on the droplet? Take acceleration due to gravity 9.8 ms-2.

• A. 2.0×10-9 C
• B. 2.0×10-6 C
• C. 5.0×105 C
• D. 5.0×106 C

Answer 1

Answer: (A)

2.0×10-9 C

Answer 2

The correct option is (A): 2.0×10-9 C