An Electron Moving with a Velocity = 5

question 16

Multiple Choice

An electron moving with a velocity = 5.0 × 10⁷ m/s enters a region of space where perpendicular electric and a magnetic fields are present.The electric field is = .What magnetic field will allow the electron to go through the region without being deflected?

• A) = +2.0 × 10^-4 T
• B) = -2.0 × 10^-4 T
• C) = +2.0 × 10^-4 T
• D) = -2.0 × 10^-4 T
• E) = +5.0 × 10^-4 T

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