Near Earth, the density of protons in the solar wind (a stream of particles from the Sun) is 12.4 cm-3, and their speed is 576 km/s. (a) Find the current density of these protons. (b) If Earth's magnetic field did not deflect the protons, what total current in amperes Earth receive?
electric physics - bobpursley, Tuesday, April 14, 2009 at 9:33am
change km/s to cm/s, then multiply density given times speed.
Current = current density*area crosssection earth/charge per proton
electric physics - drwls, Tuesday, April 14, 2009 at 9:45am
For part (b), multiply the current density (from part a) by pi R^2, where R is the radius of the Earth.