In a classical model of the hydrogen atom, the electron moves around the proton in a circular orbit of radius 0.053 nm What is the electron orbital frequency What if the effective current of the electron Solve parts a and b for the proton, in the unlikely case that the proton moves around the electron with the same radius.

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A: The given values are,

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A: we know that Time taken to orbit = Distance/Velocity also Current = Q/T

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A:

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A: Solution:-Given thatR=2 mm=0.002 mJ=2×105 A/m2

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Q: The number density of free electrons in a copper conductor estimated in Example 3.1 is 8.5 x 1028…

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Q: then

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A: Given : vd = 2 × 10-4 m/s s = 5 mm2 = 5 × 10-6 m2 n = 5 × 1028 m-3

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Q: The number density of free electrons in a copper conductor estimated in Example 3.1 is 8.5 x 1028…

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Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.