The electron density on the surface of a circular disc of
The electron density on the surface of a circular disc of radius 20 m is given as ne = 300ρ cos2 φ electrons/meter2. Determine the number of electrons residing on the surface of the disc. What is the total charge on the disc?
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the electron density on the surface of a circular disc of radius 20 m is given as ne 300rho cos2 phi electronsmeter2
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