When the wind kicks up dust and sand, the dust grains are charged. The small grains tend to get a negative charge, and the large grains a positive charge. The small grains are lifted higher by the wind.?

Question

Physics

Lincoln Garrett

13 October, 12:06

When the wind kicks up dust and sand, the dust grains are charged. The small grains tend to get a negative charge, and the large grains a positive charge. The small grains are lifted higher by the wind.?

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Vaughan · Answer 1

Small grains are negatively charged by the wind while big grains is positively charged and remains at the ground. This process creates an electric field due to the presence of oppositely charged particles.

When ever electric field exists it is directed from a positive charge to a negative charge so the here electric field is towards an upwards direction.