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Umme Asked a Question
August 19, 2020 6:34 pmpts 30 pts
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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  • Ruby negi thankyou
    seee this..
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  • Mahak thankyou
    ans is d see attached
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