At the Fermilab Accelerator in Weston,Illinois,singly-Charged Ions with Momentum 3

question 34

Multiple Choice

At the Fermilab accelerator in Weston,Illinois,singly-charged ions with momentum 3.2 × 10−¹⁶ kg⋅m/s are held in a circular orbit of radius 1 km by an upward magnetic field.What B-field must be used to maintain the ions in this orbit? (qion = 1.6 × 10−¹⁹ C)

• A) 4 T
• B) 2 T
• C) 1 T
• D) 3 T

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