일반물리학 2 · Current and Resistance · Problem 33
일반물리학 2 — Current and Resistance: Problem 33
33 A charged belt, 50 cm wide, travels at 30 m/s between a source of charge (electrons) and a sphere. The belt carries charge into the sphere at a rate corresponding to 76 \(\mu\)A. (a) Compute the surface charge density on the belt. (b) What is the number density (number per unit area) of the electrons on the belt?
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