일반물리학 2 · Current and Resistance · Problem 50
일반물리학 2 — Current and Resistance: Problem 50
50 Near Earth, the density of protons in the solar wind (a stream of particles from the Sun) can be \(4.63 \text{ cm}^{-3}\), and their speed can be \(391 \text{ km/s}\). (a) Find the current density of these protons. (b) If Earth’s magnetic field did not deflect the protons, what total current would Earth receive?
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