Use the worked example above to help you solve this problem. A wire carries a current of23.0A from west to east. Assume that at this location the magnetic field of Earth is horizontal and directed from south to north and that it has a magnitude of5.0010-5T.(a)Find the magnitude and direction of the magnetic force on a37.9m length of wire.
N-- Direction -- north west downward east upward south
(b)Calculate the gravitational force on the same length of wire if it's made of copper and has a cross-sectional area of2.9410-6m2.
What current would make the magnetic force in the example equal in magnitude to the gravitational force?I = A
A large current would very rapidly melt the wire.
here, length of wwire , l = 37.9 m current , i = 23.0 A magnetic feild , B = 5 * 10^-5 T a) force , F = I * L XB F = 23.0 *... View the full answer
- hope it helps :)
- Jul 20, 2016 at 10:51am