A uniform electric field and magnetic field are parallel and point in the same direction. An electron with velocity "v" projected in the same direction will:
Correct answer: C. Move with decreased velocity
- A. Turn to the left
- B. Turns to the right
- C. Move with decreased velocity
- D. Move with the decrease velocity
Explanation
FB = qvBsin0o = 0 Fe = qE = 0 As the electron moves along the electric field. The electric force acts on electron opposite to its direction of motion. So, its speed decreases.
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About Electromagnetism
Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.
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