Two current-carrying loops are arranged so that they form concentric circles as shown  in the figure below. The bigger loop (radius = 0.80 m) has a 5.00 A-current passing  through it. The smaller loop has a radius of 0.40 m. 1. Draw the magnetic field (use 2  different colors) produced by each current carrying loop. 2. Determine the magnitude of the  current in the inner loop so that the resulting net magnetic field at the center of the  concentric loops will be zero. (Hint: This will only happen when the directions of the  magnetic field produced by each loop are opposite in direction)

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Bar Magnet

In physics, magnetism is a phenomenon exhibited by a magnetic substance that exerts either attractive or repulsive force. A bar magnet is either a rectangular or round and hollow fit comprised of ferromagnetic materials and has a fanciful attractive field surrounded by it.