If a wire carrying current produces magnetic field around it, why its not attracted to nearby metals ? In a general household.
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Actually, this is how most medical MRI (magnetic resonance imaging) are possible.
A current of around 450 to 600 amps (depending on the Magnet construction model) keeps running through superconductive coil wires (around 16 km of wires!), which can generate a magnetic field from 0.55 Tesla to even 7 Tesla.
Putting that into perspective, the earth’s magnetic field is around 0.00006 Tesla. Hence, a 3 Tesla MRI scanner is around 60,000 times stronger than the earth’s magnetic field.
Just to add up, this magnetic field is generated “just” to net magnetize the spinning direction of electrons of the human body (99% of the time, the Hydrogen electrons). How the image is actually produced is based on Radio Frequency stimulation of those electrons and FFTs.
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