Which of the following gives the value of magnetic field according to, Biot-Savart’s law’
$\frac{{i\Delta l\sin \theta }}{{{r^2}}}$
$\frac{{{\mu _0}}}{{4\pi }}\frac{{i\Delta l\sin \theta }}{r}$
$\frac{{{\mu _0}}}{{4\pi }}\frac{{i\Delta l\sin \theta }}{{{r^2}}}$
$\frac{{{\mu _0}}}{{4\pi }}i\Delta l\sin \theta $
Explain experiment which produced magnetic field due to straight long current carrying wire.
A hollow cylinder having infinite length and carrying uniform current per unit length $\lambda$ along the circumference as shown. Magnetic field inside the cylinder is
Tesla is the unit of
The magnitude of magnetic induction at mid-point $O$ due to current arrangement as shown in Fig will be
An electron moves in a circular orbit with a uniform speed $v$. It produces a magnetic field $B$ at the centre of the circle. The radius of the circle is proportional to