Basic Maths and Units and DimensionsHard
Question
Electric field given by the vector 
= 
(xî + yĵ) N/C is present in the x-y plane. A small ring of mass M carrying charge +Q, which can slide freely on a smooth non conducting rod, is projected along therod from the point (0, l) such that it can reach the other end of the rod. Assuming there is no gravity in the region. What minimum velocity should be given to the ring (in m/s)? If in S.I. unit 
= 8
= (xî + yĵ) N/C is present in the x-y plane. A small ring of mass M carrying charge +Q, which can slide freely on a smooth non conducting rod, is projected along therod from the point (0, l) such that it can reach the other end of the rod. Assuming there is no gravity in the region. What minimum velocity should be given to the ring (in m/s)? If in S.I. unit = 8Options
A.2
B.3
C.2.5
D.3.5
Solution
For the electric field, V = 
+ K from energy conservation 
+ k + 
Mv = - 
× 2 + K
+ K from energy conservation + k + Mv = - × 2 + KCreate a free account to view solution
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