Two Single Charged Ions Moving Perpendicularly to a Uniform Magnetic

question 17

Multiple Choice

Two single charged ions moving perpendicularly to a uniform magnetic field (B = 0.40 T) with speeds of 5000 km/s follow circular paths that differ in diameter by 5.0 cm. What is the difference in the mass of these two ions?

• A)2.6 × 10−28 kg
• B)6.4 × 10−28 kg
• C)3.2 × 10−28 kg
• D)5.1 × 10−28 kg
• E)1.1 × 10−28 kg