In chamber, a uniform magnetic feild of 6.5 G(1 G=10^-4) is maintained.An electron is shot into the field with a speed of 4.8*10^6 m s^-1 normal to the feild.Explain why the path of the electron is a circle.Determine the radius of the circular orbit.(e=1.5*10^-19,me=9.1*10^-31 kg)
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