A charged dust particle of radius 5×10−7 m is located in a horizontal electric field having an intensity of 6.28×105 V/m. The surrounding medium is air with a coefficient of viscosity η=1.6×10−5 Ns/m2. If this particle moves with a uniform horizontal speed of 0.02 m/s, find the number of electrons on it.

A charged dust particle of radius 5×10−7 m is located in a horizont

1.	A charged dust particle of radius 5×10−7 m is located in a horizontal electric field having an intensity of 6.28×105 V/m. The surrounding medium is air with a coefficient of viscosity η=1.6×10−5 Ns/m2. If this particle moves with a uniform horizontal speed of 0.02 m/s, find the number of electrons on it.
Answer» A charged dust particle of radius $5 \times 10^{- 7} m$ is located in a horizontal electric field having an intensity of $6.28 \times 10^{5} V / m$ . The surrounding medium is air with a coefficient of viscosity $η = 1.6 \times 10^{- 5} N s / m^{2}$ . If this particle moves with a uniform horizontal speed of 0.02 m/s, find the number of electrons on it.

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