A horizontal power line of length 40 m carries a current of 2.9 kA as shown in t

Question

A horizontal power line of length 40 m carries a current of 2.9 kA as shown in the figure below. Earth's magnetic field at this location has a magnitude equal to 5.0 X 10-5 T and makes an angle of 65

A horizontal power line of length 40 m carries a current of 2.9 kA as shown in the figure below. Earth's magnetic field at this location has a magnitude equal to 5.0 X 10-5 T and makes an angle of 65 degree with the power line. Find the magnitude and direction of the magnetic force on the power line.

Explanation / Answer

F=BILsin(o)

F=5*10^-5*40*2.9*10^3*sin65

F=5.25 N

and direction is upward

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