A horizontal overhead powerline is at height of $4m$ from the ground and carries a current of $100A$ from east to west. The magnetic field directly below it on the ground is $\left( {{\mu _0} = 4\pi \times {{10}^{ - 7}}\,\,Tm\,\,{A^{ - 1}}} \right)$

Question

A horizontal overhead powerline is at height of $4m$ from the ground and carries a current of $100A$ from east to west. The magnetic field directly below it on the ground is
$\left( {{\mu _0} = 4\pi \times {{10}^{ - 7}}\,\,Tm\,\,{A^{ - 1}}} \right)$

$2.5 \times {10^{ - 7}}\,T$ southward

$5 \times {10^{ - 6}}\,T$ northward

$5 \times {10^{ - 6}}\,T$ southward

$2.5 \times {10^{ - 7}}\,T$ northward

Solution

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