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If an electron entering at a magnetic field of 2 × 10-2 T has a velocity of 3 × 107 ms-1 and describes a circle of radius 8 × 10-3 m, then find the value of \(\frac {e}{m}\) of the electron.

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If an electron entering at a magnetic field of 2 × 10<sup>-2</sup> T has a velocity of 3 × 10<sup>7</sup> ms<sup>-1</sup> and describes a circle of radius 8 × 10<sup>-3</sup> m, then find the value of \(\frac {e}{m}\) of the electron.






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