Current needed through solenoid to produce given B field

AI Thread Summary
To achieve a magnetic field strength of 1.5 T in a solenoid that is 1.8 m long and 75 cm in diameter, the relationship B = μ0 * I * N / l is essential. The discussion centers on calculating the necessary current (I) through the superconducting wire, which has a diameter of 2.20 mm, and determining the number of turns (N) required for the solenoid. Participants are exploring whether it's possible to find the current without explicitly calculating N. The solenoid's tight winding and dimensions are critical factors in these calculations. Accurate determination of these parameters is vital for effective magnetic resonance imaging applications.
Linus Pauling
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1. Magnetic resonance imaging needs a magnetic field strength of 1.5 T. The solenoid is 1.8 m long and 75 cm in diameter. It is tightly wound with a single layer of 2.20-mm-diameter superconducting wire.


2. B = mu0BI / l



3. Is there a way to do this without finding N? Either way, how do I calculate N with the given information?
 
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Hi Linus Pauling! :smile:
Linus Pauling said:
…how do I calculate N with the given information?

It's "tightly wound", and it's 1.8m long … :wink:
 

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