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  • A long straight wire along the z-axis carries a current I in the negative z direction. The magnetic vector field at a point having coordinates (x, y) in the z=0 plane is<div clas

A long straight wire along the z-axis carries a current I in the negative z direction. The magnetic vector field at a point having coordinates (x, y) in the z=0 plane is

Option: 1

\mathrm{\frac{\mu_0 l(y i-x j)}{2 \pi\left(x^2+y^2\right)} }


Option: 2

\mathrm{\frac{\mu_0 1(x i-y j)}{2 \pi\left(x^2+y^2\right)} }


Option: 3

\mathrm{\frac{\mu_0(x \hat{j}-y \hat{i})}{2 \pi\left(x^2+y^2\right)} }


Option: 4

\mathrm{\frac{\mu_0 l(x \hat{i}+y \hat{j})}{2 \pi\left(x^2+y^2\right)}}


Answers (1)

best_answer

Long joining from origin
\mathrm{x \hat{i}+y \hat{j} n }
$\perp$ line,   \mathrm{y \hat{i}-x \hat{j} }

Posted by

Pankaj Sanodiya

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