Question
A velocity selector in a mass spectrometer uses a 0.100-T magnetic field. (a) What electric field strength is needed to select a speed of $4.00 \times 10^6 \textrm{ m/s}$? (b) What is the voltage between the plates if they are separated by 1.00 cm?
1. $4.00 \times 10^5 \textrm{ N/C}$
2. $4.00 \times 10^3 \textrm{ V}$
Solution Video