Umme posted an Question
August 20, 2020 • 00:04 am 30 points
  • IIT JAM
  • Physics (PH)

Q.21 a tiny spherical oil drop carrying a net charge q is balanced in still air with a vertical 817t 105 v/m. uniform electric field of strength x 10° v/m. 7 wh

Q.21 A tiny spherical oil drop carrying a net charge q is balanced in still air with a vertical 817T 105 V/m. uniform electric field of strength x 10° V/m. 7 When the field is switched off, the drop is observed to fall with terminal velocity 2 x 10-3m/s. Giveng = 9.8 m/s2, viscosity of air = 1.8 x 105 Ns/m'& the density of oil = 900 kg/m the magnitude of q is (b) 3.2 x 10-19C (d) 8 x 10-19c (a) 1.6 x 10-19 (c)4.8 x 10-19c

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