A Circular ring of radius `3a` is uniformly charged with charge `q` is kept in `x-y` plane with center at origin. A particle of charge `q` and mass `m` is projected frim `x=4` towards origin. Find the minimum speed of projection such that it reaches origin.
A ring with a uniform charge Q and radius R , is placed in the yz plane with its centre at the origin
A circular ring of radius R and uniform linear charge density +lamdaC//m are kept in x - y plane with its centre at the origin. The electric field at a point (0,0,R/sqrt(2)) is
A circular ring of radius R with uniform positive charge density lambda per unit length is located in the y z plane with its center at the origin O. A particle of mass m and positive charge q is projected from that point p( - sqrt(3) R, 0,0) on the negative x - axis directly toward O, with initial speed V. Find the smallest (nonzero) value of the speed such that the particle does not return to P ?
A circular ring of mass M and radius R is placed in YZ plane with centre at origin. A particle of mass m is released from rest at a point x = 2R. Find the speed with which it will pass the centre of ring .
A ring of radius R is with a uniformly distributed charge Q on it .A charge q is now placed in the centre of the ring .Find the increment in tension in the ring.
A circular ring of radius R with uniform positive charge density lambda per unit length is located in the y-z plane with its centre at the origin O. A particle of mass m and positive charge q is projected from the point P (Rsqrt3, 0, 0) on the positive x-axis directly towards O, with an initial speed v. Find the smallest (non-zero) value of the speed v such that the particle does not return to P.
In the figure shown there is a large sheet of charge of uniform surface charge density 'sigma' .A charge particle of charge '-q' and mass 'm' is projected from a point A on the sheet with a speed 'u' with the angle of projection such that it lands at maximum distance from A on the sheet. Neglecting gravity, find the time flight
Eight charges each of value q each are placed on a ring of radius R placed in x-y plane with origin at centre -q charge having mass m is projected from z = oo towards the centre of the ring with velocity v. The velocity of -q when it reaches the centre of ring is (neglect gravity)-
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