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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > 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

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

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