9702/41/O/N/23
5 (a) Define electric potential at a point
(b) Two isolated charged metal spheres X and Y are situated near to each other in a vacuum with their centres a distance of 24 m apart. Point P is at a variable distance x from the centre of sphere X on the line joining the centres of the spheres. Fig. 5.1 shows the variation with x of the electric potential V due to the spheres at point P.
State three conclusions that can be drawn about the spheres from Fig. 5.1. The conclusions may be qualitative or quantitative.
(c) A positively charged particle is placed at point P in (b), such that x = 12 m. The particle is released. Describe and explain the subsequent motion of the particle.
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