lovelylm1980
Feb25-04, 11:57 PM
A straight 1.65 mm diameter copper wire can just "float" horizontally in air because of the force of the Earth's magnetic field B which is horizontal and of magnitude 5.82×10-5 T. What current does the wire carry?
Is the correct equation to use B=(Mew)I/2pir
Is the correct equation to use B=(Mew)I/2pir