A Uniform Magnetic Field of Magnitude 0

question 8

Multiple Choice

A uniform magnetic field of magnitude 0.80 T in the negative z-direction is present in a region of space,as shown in the figure.A uniform electric field is also present.An electron that is projected with an initial velocity v₀ = 9.1 × 10⁴ m/s in the positive x-direction passes through the region without deflection.What is the electric field vector in the region?

• A) -73 kV/m
• B) +73 kV/m
• C) +110 kV/m
• D) +110 kV/m
• E) -110 kV/m

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