Magnetic Field of a Current Loop: A flat circular coil having 57 turns of very thin wire has a diameter of 9.5 cm and carries 7.2 A of current. (?0 = 4? × 10-7 T ? m/A)(a) What is the strength of the magnetic field at the center of the coil?(b) If the same length of wire were used to make a coil with twice the original diameter, how large would the magnetic field at the center be when it carried the same current as before?
What will be an ideal response?
(a) 5.4 mT (b) 1.4 mT
Physics & Space Science
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