Along electric cable is suspended above the earth and carries a current of 345 a parallel to the surface of the earth. the earth’s magnetic field has a value of 5.6 × 10−5 t and makes an angle of 88.2 ◦ with respect to the cable. what is the magnitude of the force f exerted on a cable of length 46.9 m due to the earth’s magnetic field? answer in units of n
Answers: 1
is the magnetic magnitude generated by Earth. L = 46.9 m is the cable length. 
is the angle between vector B and cable direction.
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