Moving Charges and Magnetism

Question: An electron and a proton enter region of uniform magnetic field in a direction at right angles to the field with the same kinetic energy. They describe circular paths of radius ${r_e}$ and ${r_p}$ respectively. Then

1) ${r_e} = {r_p}$

2) ${r_e} < {r_p}$

3) ${r_e} > {r_p}$

4) ${r_e}$ may be less than or greater than ${r_p}$ depending on the direction of the magnetic field

Solution:

Explanation: No Explanation

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