Halliday-cap 22-vol.3- Rar - P22 025

Transcript

25. The unit Ampere is discussed in §22-4. The proton flux is given as 1500 protons per square meter per second, where each proton provides a charge of q = +e. The current through the spherical area 4πR2 = 4π(6.37 × 106 m)2 = 5.1 × 1014 m2 would be    
protons
14 2 1.6 × 10−19 C/proton = 0.122 A . i = 5.1 × 10 m 1500 2 s·m