Chapter 7
Q. 7.3
Two long wires are located in the x-y plane oriented in the z-direction as shown in Fig. 7.5. Calculate the magnitude and direction of magnetic field intensity at point P.
Step-by-Step
Verified Solution
Due to current in conductor a; direction is shown in Fig. 7.4 by the right-hand rule
H_{a} = \frac{4}{2π × 20 × 10^{-2} } = \frac{10}{π} A/m
Similarly
H_{b} = \frac{10}{π} A/m
Adding the two vectors
\overline{H} = \sqrt{2} H_{a} ∠ 90° + 45°
\overline{H} = \frac{10 \sqrt{2}}{π} ∠ 135° A/m
