A tiny spherical oil drop carrying a net charge q is balanced in still air with a vertical uniform electric field of strength 81π/7 ​×10 ^5 V/m When the field is switched off

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A tiny spherical oil drop carrying a net charge q is balanced in still air with a vertical uniform electric field of strength 81π/7 ​×10 ^5 V/m When the field is switched off, the drop is observed to fall with terminal velocity 2×10 ^ −3 m/s Given g = 9.8 m/s^2 , viscosity of the air = 1.8 × 10^−5 Ns/m^2 and the density of oil =900 kg /m^3 , the magnitude of q is
30
Oct
A tiny spherical oil drop carrying a net charge q is balanced in still air with a vertical uniform electric field of strength 81π/7 ​×10 ^5 V/m When the field is switched off, the drop is observed to fall with terminal velocity 2×10 ^ −3 m/s Given g = 9.8 m/s^2 , viscosity of the [...]
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Tags: A tiny spherical oil drop carrying a net charge q is balanced in still air with a vertical uniform electric field of strength 81π/7 ​×10 ^5 V/m When the field is switched off , the drop is observed to fall with terminal velocity 2×10 ^ −3 m/s Given g = 9.8 m/s^2 , the magnitude of q is , viscosity of the air = 1.8 × 10^−5 Ns/m^2 and the density of oil =900 kg /m^3 ,