Electromagnetic Field Theory
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

 144 μN.
  1144 μN.
 1440 μN.
 244 μN.

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Electromagnetic Field Theory
According to Coulomb’s law, the force of attraction or repulsion, between to electrical charges is

 inversely proportional to the square of the distance between them.
 inversely proportional to the distance between them.
 directly proportional to the square of the distance between them.
 directly proportional to the distance between them.

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