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Introductory Physics Homework Help
Number of turns for a solenoid
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[QUOTE="Matt21, post: 5719932, member: 614619"] [h2]Homework Statement [/h2] The magnetic field in the middle of a solenoid of length L= 40cm and area of the cross-section A=12 cm^2 is B = 3 mT. The current through the solenoid is I = 4 A. What is the number of turns in this solenoid? [h2]Homework Equations[/h2] BL=μ0*n*I =(4πx10^-7)*n*I [h2]The Attempt at a Solution[/h2] I have attempted this problem many times trying to use the formula above or similar variations of it with no success. I need to use the area of the cross-section in a specific formula to calculate the number of turns. Is there a formula that I'm missing as it is not in my notes, if not how would I proceed? [/QUOTE]
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Number of turns for a solenoid
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