An electron is moving with a velocity of 10⁷m/s, enters a uniform magnetic field of 1 T. The direction of the velocity of electron is parallel to the magnetic field. What would be its trajectory in this field?

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Solution

Force on a change particle in a magnetic field is given by
$F = q V B s i n θ w h e r e θ i s t h e a n g l e b e t w e e n \vec{V} a n d \vec{B} \vec{V} ∥ \vec{B} (g i v e n) \Rightarrow θ = 0^{o}, s i n 0^{o} = 0 \Rightarrow F = 0$
hence direction of velocity of electron will not change or its trajectory will not change , it will continue to move parallel to the magnetic field .

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An electron is moving with a velocity of 107m/s, enters a uniform magnetic field of 1 T. The direction of the velocity of electron is parallel to the magnetic field. What would be its trajectory in this field?

An electron is moving with a velocity of 10⁷m/s, enters a uniform magnetic field of 1 T. The direction of the velocity of electron is parallel to the magnetic field. What would be its trajectory in this field?