NEET 2016 Physics Coulomb's Law MCQ Question
Two identical charged spheres suspended from a common point by two massless strings of lengths l, are initially at a distance d (d<< l) apart because of their mutual repulsion. The charges begin to leak from both the spheres at a constant rate. As a result, the spheres approach each other with a velocity v. Then v varies as a function of the distance x between the spheres, as
v ∝ x⁻¹/²
v ∝ x⁻¹
v ∝ x¹/²
v ∝ x
Correct Answer
Detailed Explanation
As the charges leak, the force decreases, leading to a decrease in separation. The velocity is proportional to the square root of the inverse of the distance.
Found an issue with this question?
Related Questions
More from Electrostatics
Assertion : Electric potential of earth is taken zero. Reason : No electric field exists on earth surface.
A conducting sphere of radius R carrying charge Q lies inside an uncharged conducting shell of radius 2R. If they are joined by a metal wire, the amou...
The equivalent capacitance of the system shown in the following circuit is: