A Deuteron Is Moving with a Speed of 2 $\times$ 10⁶ M/s at Right Angles to a Magnetic Field

Multiple Choice

A deuteron is moving with a speed of 2.0 $\times$ 10⁶ m/s at right angles to a magnetic field.The field is uniform,with magnitude B = 0.40 T.The mass and charge of a deuteron are 3.3 $\times$ 10^-27 kg and 1.6 $\times$ 10^-19 C,respectively.The radius of the deuteron orbit is approximately

A) 0.21 m
B) 1.8 m
C) 6.3 m
D) 10 cm
E) 27 cm