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Question
A negative point charge q = - 40 nC is moving with velocity of 6 × 106 m/s in a direction specited by unit vector uy + 0.6 uz. Find the magnitude of force vector on the moving particle by the field B = 2 ux + 3 uy + 5 uz mT and E = 2 ux - 3 uy + 5 uz KV/m
Options:
A .   244 μN.
B .    1144 μN.
C .   144 μN.
D .   1440 μN.
Answer: Option B

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