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pat666
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Homework Statement
You have 12m of 0.50mm diameter copper wire and a power supply capable of passing 17A through the wire.
What magnetic field strength would you obtain inside a 2.0cm diameter solenoid with the wire spaced as closely as possible?
Homework Equations
B=u0nI
The Attempt at a Solution
I found the number of loops by
D=.002+2*1*10-3m (diametre plus 2 radi of wire)?
then n=12/circumfrence =173.6turns (C=pi*D
then I subbed all the values and got 0.0037T which is wrong
all help appreciated - I think my problem is in calculating the number of turns??