Question
Question: A charged water drop of radii 0.1\(\mu m\) is under equilibrium in some electric field. The charge o...
A charged water drop of radii 0.1μm is under equilibrium in some electric field. The charge on the drop is equivalent to electronic charge. The intensity of electric field is
A
1.61N/C
B
25.2N/C
C
262N/C
D
1610N/C
Answer
1.61N/C
Explanation
Solution
Initially F=kr2Q2

Finally F′=r2k.(4Q)2=16F