An electron having kinetic energy 10 eV is circulating in a path of radius 0 . 1 m in an external magnetic field of intensity 10 - 4 T . The speed of the electron will be

Question

An electron having kinetic energy 10 eV is circulating in a path of radius 0 . 1 m in an external magnetic field of intensity 10 - 4 T . The speed of the electron will be, 1.76 × 10 6 m s - 1, 4.8 × 10 6 m s - 1, 2.0 × 10 12 m s - 1, 4.8 × 10 12 m s - 1

MARKS App · Accepted Answer

When charge enters into a perpendicular magnetic field, it starts to move in a circular path. Radius of a circular path followed by a charge particle: r = m V q B V = 1.76 × 10 6 m s - 1

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