Questions
Two small spherical balls each carrying a charge (10 micro-coulomb) are suspended by two insulating threads of equal lengths 1m each, from a point fixed in the ceiling. It is found that in equilibrium threads are separated by an angle between them, as shown in the figure. What is the tension in the threads (Given: )
detailed solution
Correct option is B
In the following figure, in equilibrium Fe=T sin 30o, r=1 m⇒9×109⋅Q2r2=T×12⇒9×109⋅10×10−6212=T×12⇒T=1.8NSimilar Questions
Gauss’s law is true only if force due to a charge varies as
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