A velocity selector for ions uses perpendicular electric and magnetic fields. If the electric field used were 800 V/m, what magnetic field would allow the selection of a velocity of 4000 m/s?

A. 0.0400 T
B. 0.0800 T
C. 0.160 T
D. 0.200 T
E. 0.500 T


D. 0.200 T

Physics & Space Science

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