What Value of B Should Be Used in a Velocity

question 69

Multiple Choice

What value of B should be used in a velocity selector to separate out 2.0-keV protons if E is fixed at 80 kV/m?

• A) 0.18 T
• B) 0.11 T
• C) 0.15 T
• D) 0.13 T
• E) 0.23 T

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