A copper ring having a cut such as not to from a complete loop is held horizontally and a bar magnet is dropped through the ring with its length along the axis of the ring. The acceleration of the falling magnet is :
Correct answer: A. g
- A. g
- B. Less than g
- C. More than g
- D. 0
Explanation
As the ring is not continuous, the emf will generate in the ring but due to incomplete circuit, no current will flow. As no current flows, no magnetic field will generate and the motion of the bar magnet will not be opposed. Thus, the bar magnet will continuously fall freely under gravity only. Therefore, the acceleration of the falling magnet will be equal to the acceleration due to gravity g
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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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