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10. A particle with charge q = 1 C is moving in the positive z-direction at -2 m/s. The
magnetic field at its position is B = (3i-4j) T. What is the magnetic force on the particle?
A) (20 i + 15 j) N
B) (20i - 15 j) N
C) (-20 i + 15j) N
D) (-20 i 15 j) N
E) None of these

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