The drawing shows a particle following the circular trajectory shown in a magnet

Question

The drawing shows a particle following the circular trajectory shown in a magnetic field that is directed toward you. The magnitude of the velocity is constant as the particle follows the circular path. Which one of the following statements concerning the particle must be true? the particle could be an electron. The particle must be positively charged. The particle could be a neutron. The particle must be negatively charged. Too little information is given to determine anything about the particle.

Explanation / Answer

Answer B.

The particle must be positively charged particle.

From right handed principal When a positive charged particle in a uniform magnetic field

If a positive charged particle in a unifrom magnetic field is into the page of the paper charged particle will rotate in counter clockwise

And if the chrged is in clockwise for the same charge the magnetic field is out of the page.

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