An electron experiences the greatest force as it travels 1.7 ✕ 106 m/s in a magnetic field when it is moving southward. The force is upward and of magnitude 2.5 ✕ 10-12 N. What are the magnitude and direction of the magnetic field?
F = q v B sin theta
2.5E-12 = 1.6E-19*1.7E6*B*sin(90)
direction is westwards
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