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# Current needed to generate a magnetic field 1.2cm from a long strait wire?

What current is needed to generate the magnetic field strength of 5.0*10^-5 T at a point 1.2 cm from a long, straight wire?

Also

5.0*10^-3 T at 1.2cm?

1.0 T at 1.2cm

10 T at 1.2cm.

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