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OpenStudy (anonymous):
A solenoid, made with 28 cm of wire, is to produce a 0.20 T magnetic field at its centre. If the maximum current is 8.8 A, how many turns must the solenoid have?
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OpenStudy (anonymous):
Use formula: magnetic field = 4pi * 10^-7 times (number of turns/ unit length) times current
OpenStudy (anonymous):
By the way, this question looks incomplete.
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