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in Magnetic effects of current and magnetism by (15 points)
Two charged particle \( A \) and \( B \) each of charge \( +e \) and masses 12 amu and 13 amu respectively follow a circular trc ectory in chamber \( X \) after the velocity selector as shown in the figure. Both particles enter the velocity selector with speed \( 1.5 \times 10^{6} ms ^{-1} \). A uniform magnetic field of strength 2.0 T is maintained within the chamber \( X \) and in the velocity selector. (A) Electric field across the conducting plate of the velocity selector is \( -10^{6} NC ^{-1} \hat{ i } \) (B) Electric field across the conducting plate of the velocity selector is \( 10^{6} NC ^{-1} \hat{ i } \) (C) The ratio \( \frac{r_{A}}{r_{B}} \) of the radii of the circular paths for the two partic (D) The ratio \( \frac{r_{A}}{r_{B}} \) of the radii of the circular paths for the two partic

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