ON20 P41 Q5 Potential Graph Between Two Point Charges | Oct/Nov 2020 | Cambridge A Level Physics

9702/41/O/N/20: (a) Define electric potential at a point. #9702w20p41 #A2multiChargeP4 #A2resultantPotentialP4 #Lv3 (b) Two point charges A and B are separated by a distance of 12.0cm in a vacuum, as illustrated in Fig. 5.1. The charge of A is +2.0 × 10^–9C. A point P lies on the line joining charges A and B. Its distance from charge A is x. The variation with distance x of the electric potential V at point P is shown in Fig. 5.2. Use Fig. 5.2 to determine: (i) the charge of B (ii) the change in electric potential when point P moves from the position where x = 9.0cm to the position where x = 3.0cm. (c) An α-particle moves along the line joining point charges A and B in Fig. 5.1. The α-particle moves from the position where x = 9.0cm and just reaches the position where x = 3.0cm. Use your answer in (b)(ii) to calculate the speed v of the α-particle at the position where x = 9.0cm. #A2ElectricFields Playlist    • Ch18 Electric Fields | CAIE 9702 A2 Physics   ON20 Paper Discussion Playlist:    • 9702 ON20 Papers CAIE Physics   Instagram Pocket Guide (  / etphysics  ) More Resources (https://9702-physics.blogspot.com/) Support us! (  / etphysics  ) Tuition/Tutoring inquiries: Email: suitlin@gmail.com Whatsapp: https://wa.me/60126679171 #CambridgeALevelPhysics