Page 518 - Basic Electrical Engineering
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Flux,
Flux, density,
From equation 5.17, the force or the pull on the armature by each pole,
Example 5.11 An overhead electrical power transmission line carries a
current of 100A. The direction of current flow through the line is from the
West to the East direction. What is the direction of the magnetic field
produced and what is its value 1 m below the overhead line?
Solution:
The magnitude of the magnetic field, B is expressed as
–7
Substituting values of µ , I, and r as 4π 3 10 , 100A and 1m, respectively,
o
