Brain Function and Magnetic Fields Experiments have shown that thought processes in the brain can be affected if the parietal lobe is exposed to a magnetic field with a strength of 1.0T .
How much current must a long, straight wire carry if it is to produce a 1.0T magnetic field at a distance of 0.75m ? (For comparison, a typical lightning bolt carries a current of about 20,000A , which would melt most wires.)
I=_____A