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Current Loop Is a Magnet?

A proton move...

Question

A proton moves along horizontal line and towards observer, the pattern of concentric circular field lines of magnetic field which produced due to its motion: 1. ACW, in horizontal plane 2. ACW, in vertical plane 3. CW, in horizontal plane 4. CW, in vertical plane Explain also

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Q. A proton moves along horizontal line towards observer.What will be the pattern of concentric circular field lines of magnetic field which produced due to its motion.

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Q. Two circular coils each of 100 turns are held such that one lies in the vertical plane and the other in the horizontal plane with their centres coinciding. The radius of vertical and horizontal coils are 20 cm and 30 cm respectively. If the magnetic field at their common centre is zero, find current in each coil. Horizontal component of earth's magnetic field is 27.8 Aim and angle of dip at this place is

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