Concept explainers
The maximum magnetic field is produced under the power lines.
To compare: The obtained result with the Earth’s field.
Answer to Problem 82GP
The magnetic field in the power line is
Explanation of Solution
Given:
Power lines operate at
Power lines are
Formula used:
Magnetic field is calculated as
Calculation:
Maximum current in the power line is
Considering the geometry of the figure below.
Distance from the ground to the power lines is
The angle between them is
The net magnetic field is
This magnetic field is greater than the magnetic field of the Earth that is
Conclusion:
Thus, the magnetic field in the power line is
Chapter 20 Solutions
Physics: Principles with Applications
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