
Grade 12th pass10 grade science
Which statement is true:
(a) A ring of radius R carries a uniformly distributed charge +Q. A point charge –q is placed on the axis of the ring at a distance 2R from the center of the ring and released from rest. The particle executes a simple harmonic motion along the axis of the ring.
(b) Electrons move from a region of higher potential to lower potential.
(i) only a
(ii) only b
(iii) a and b
(iv) none of them.
Which statement is true:
(a) A ring of radius R carries a uniformly distributed charge +Q. A point charge –q is placed on the axis of the ring at a distance 2R from the center of the ring and released from rest. The particle executes a simple harmonic motion along the axis of the ring.
(b) Electrons move from a region of higher potential to lower potential.
(i) only a
(ii) only b
(iii) a and b
(iv) none of them.




