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A horizontal overhead power line carries...

A horizontal overhead power line carries a current of 90 A in east to west direction. What is the magnitude and direction of the magnetic field due to the current 1.5 m below the line ?

Text Solution

Verified by Experts

Given I =90 A and r=1.5 m
The magnitude of magnetic field
`B=(mu_(0))/(4pi).(2I)/(r )=(10^(-7)xx2xx90)/(1.5)`
`=1.2xx10^(-5)T`
The direction of magnetic flux is given by Maxwell's right hand rule. So, the direction of magnetic field at point P due to the following current is perpendiculary outwards to the plane of paper.
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