Find magnetic field at $O$
$\frac{{5{\mu _0}i\theta }}{{24\pi r}}$
$\frac{{{\mu _0}i\theta }}{{24\pi r}}$
$\frac{{11{\mu _0}i\theta }}{{24\pi r}}$
Zero
Find the magnitude of magnetic field at point $p$ due to a semi - infinite wire given below
Give convection for electric or magnetic field emerging out of the plane of the paper and going into the plane of paper.
The unit vectors $\hat i,\;\hat j\;{\rm{and }}\,\hat k$ are as shown below. What will be the magnetic field at $O$ in the following figure
The magnetic field intensity at the point $O$ of a loop with current $i$, whose shape is illustrated below is
Two similar coils of radius $R$ are lying concentrically with their planes at right angles to each other. The currents flowing in them are $I$ and $2I$, respectively. The resultant magnetic field induction at the centre will be