APFIVE Balancing Electric and Magnetic Forces
An electron moves through a region containing both electric and magnetic fields. The electron experiences no net force when its velocity is $$2.0 \times 10^6$$ m/s in the +x direction. If the electric field is 300 N/C in the +y direction, what can you conclude about the magnetic field?
A
B = 1.5×10⁻⁴ T in the +z direction
B
B = 6.0×10⁵ T in the -z direction
C
B = 6.0×10⁵ T in the +z direction
D
B = 1.5×10⁻⁴ T in the -z direction
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