An electron is projected horizontally from south to north in a uniform horizontal magnetic field acting from west to east. The direction along which it will be deflected is:
Correct answer: C. Vertically upwards
- A. Northwards
- B. Southwards
- C. Vertically upwards
- D. Vertically downwards
Explanation
Apply the rule as shown in the following image.By this, we get a downward direction. But keep in mind we use the right-hand rule for positive charge. In case of a negative charge, we will take opposite conclusions so the direction of force (deflection) would be vertically upward in the case of an electron.
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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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