(Solved): Calculating the magnetic field due to a straight current carrying wire of length 2L at a distance ...

Calculating the magnetic field due to a straight current carrying wire of length $2\mathrm{L}$ at a distance d away from its center: Questions below demonstrate how to solve this question using Biot-Savart Law correctly. A random $d$ is selected on the wire. In the Biot-Savart law expression $\overrightarrow{dB}=\frac{{?}_0}{4?}\frac{d\vec{l}\times \vec{r}}{r^2}$ what is the direction of $\mathbf{d}\overrightarrow{\mathbf{B}}$ ? Select one: a.Along $r$ but away from $d\mathbf{l}$ b.towards $?i$ c.towards $?\hat{j}$ d. out of the page, $\hat{k}$ e.towards $\hat{j}$ f.towards $i$ g.into the page, $?\hat{k}$