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A horizontal overhead power lines 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*5m` below the line?

Text Solution

Verified by Experts

Here, `i=90A` , `r=1*5m`.
Now, `B=(mu_0)/(4pi)(2i)/(r)=(10^-7xx2xx90)/(1*5)=1*2xx10^-5T`
It acts towards south.
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Knowledge Check

  • 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?

    A
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    B
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    C
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    D
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