In a closed ring (a) and in an open ring (b )magnets are falling along the axis of the ring. The current generated in a and b have directions:
Correct answer: A. Clockwise, Zero
- A. Clockwise, Zero
- B. Anticlockwise, zero
- C. Anticlockwise, clockwise
- D. Zero, zero
Explanation
Option A is correct as A magnet falls with the S-pole along the axis of the ring. So according to Lenz's law S-pole forms along the face of a magnet. As shown in Fig. the current clock wise. (ii) The ring is open. So, no current induced in the ring i.e 1 = 0.
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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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