> Q. In figure two parallel infinitely long current carrying wires are shown. If resultant magnetic field at point $A$ is zero. Then determine current $I$. – LIVE ANSWER TODAY

Q. In figure two parallel infinitely long current carrying wires are shown. If resultant magnetic field at point $A$ is zero. Then determine current $I$.

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In figure two parallel infinitely long current carrying wires are shown. If resultant magnetic field at point $A$ is zero. Then determine current $I$.

Solution:

at A$quad$$quad$ B1 + B2 = 0

$frac{mu_{0}i_{1}}{2pi r_{1}}=frac{mu_{0i_2}}{2pi r_{2}}$

$frac{i_{1}}{27}=frac{10}{9}$

$I=30A$

Solution Image

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