If an electron enters the magnetic field at right angle from left and B is into paper, electron will be deflected:
Correct answer: B. Downward
- A. Upward
- B. Downward
- C. No deflection
- D. None of these
Explanation
When an electron enters a magnetic field at a right angle from the left and the magnetic field B is directed into the paper, the electron will experience a magnetic force perpendicular to both its velocity vector and the magnetic field direction. According to the right-hand rule for the magnetic force on a moving charge:If the velocity of the electron is to the right (from the viewer's perspective), and the magnetic field B is into the paper, the resulting magnetic force will be upward.
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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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