In a chamber, a uniform magnetic field of 6.5 G (1 G =10-4 T ) is maintained. An electron is shot into the field with a speed of 4.8 × 106 ms -1 normal to the field. Determine the radius of the circular orbit. ( e =1.6 × 10-19 C , m e =9.1 × 10-31 kg )

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