7. The magnetic field 2 cm from a long, straight wire is 10-6 T. The current in the wire is C. 1 A A. 0.01 A B. 0.1 A D. 10 A 8.The magnetic field inside a 100-turn 20 mm long that carries a 10-A current is C. 0.063 T D. 0.13 T A. 0.00063 T B. 0.0013 T

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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.