Balancing Electric and Magnetic Forces
An electron moves through a region with both an electric field and a magnetic field. The electron experiences no net force while moving at a velocity of m/s in the +x-direction. If the electric field is 300 N/C in the +y-direction, what is the magnetic field?
A
B = 6.0×10⁵ T in the +z direction
B
B = 6.0×10⁵ T in the -z direction
C
B = 1.5×10⁻⁴ T in the -z direction
D
B = 1.5×10⁻⁴ T in the +z direction
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