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An electron is moving with a speed of 3 ...

An electron is moving with a speed of `3 xx 10^7m//s` in a magnetic field of `6 xx 10^-4 T` perpendicular to its path. What will be the radius of the path? What will be the frequency and the energy in keV? Given: mass of electron = `9 xx 10^-31 kg`, charge e = `1.6 xx 10^-19C`, lev = `1.6 xx 10^-19 J`.

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