How can we determine the direction of the mag | vedclass

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(A) The Biot-Savart law is given by the vector expression: $d\vec{B} = \frac{\mu_0}{4\pi} \frac{I (d\vec{l} 	imes \vec{r})}{r^3}$.In this expression,

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By using the Right-Hand Thumb Rule.

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(A) The Biot-Savart law is given by the vector expression: $d\vec{B} = \frac{\mu_0}{4\pi} \frac{I (d\vec{l} 	imes \vec{r})}{r^3}$.In this expression,the term $(d\vec{l} 	imes \vec{r})$ represents the cross product of the current element vector $d\vec{l}$ and the position vector $\vec{r}$.The direction of the magnetic field $d\vec{B}$ is determined by the direction of this cross product.According to the right-hand rule for cross products,if you curl the fingers of your right hand from the direction of $d\vec{l}$ towards the direction of $\vec{r}$,your thumb points in the direction of the magnetic field $d\vec{B}$.

How can we determine the direction of the magnetic field using the Biot-Savart law?

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