Q1.13Multiple correct
A positive charge Q is uniformly distributed along a circular ring of radius R. A small test charge q is placed at the centre of + + Q the ring (Fig. 1.7). Then
This question refers to a figure in the original PDF.
- (a)If q > 0 and is displaced away from the centre in the plane of the ring, it will be pushed back towards the centre.
- (b)If q < 0 and is displaced away from the centre in the plane q of the ring, it will never return to the centre and will R continue moving till it hits the ring. z
- (c)If q < 0, it will perform SHM for small displacement along the axis.
- (d)q at the centre of the ring is in an unstable equilibrium within the plane of the ring for q > 0. Fig. 1.7