a wire loop with a radius of. 45 m is placed on the ground. a magnetic field is

Question

a wire loop with a radius of. 45 m is placed on the ground. a magnetic field is created so that it points parallel to the ground and parallel to the wire loop. The strength of the magnetic field is 25 T, but is slowly decreases to Zero in 30 seconds. Calculate the initial magnetic flux through the wire loop. phi = Wb Calculate the induced EMF in the wire loop. EMF = V If the resistance of the loop is 3 ohm. calculate the current in the loop. I = a Calculate the magnetic field strength generated by the wire loop at the center of the loop. B = T

Explanation / Answer

a) flux= BA =25*pi*r^2= 15.9 Weber

b) flux/time= .53 V

c. I= V/R =.1767 A

d. http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/curloo.html

magnetic field by current carrying circular loop;

u*I/2r =2.467x10^-7 T

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