Question

Two conductors are carrying forward and return current of $+I$ and $-I$ as shown in figure. The magnetic field intensity $\overrightarrow{H}$ at point $P$ is

• A. $\frac{I}{\pi d}\overline{y}$
• B. $\frac{I}{\pi d}\overline{x}$
• C. $\frac{I}{2\pi d}\overline{Y}$
• D. $\frac{I}{2\pi d}\overline{X}$

Answer 1

The correct option is A $\frac{I}{\pi d}\overline{y}$

Ans : (a)

$\overrightarrow{H}=\overrightarrow{H_1}+\overrightarrow{H_2}=\frac{I}{2\pi d}\hat{y}+\frac{I}{2\pi d}\hat{y}=\frac{I}{\pi d}\hat{y}$