The earth’s magnetic field at a given p | vedclass

Name: PDF Generator App | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(b) Magnetic field at the centre of circular loop
$B = \frac{{{\mu _0}}}{{4\pi }}\frac{{2\pi i}}{r} $

$\Rightarrow 0.5 	imes {10^{ - 5}} = \frac{

Vedclass · Accepted Answer

$0.4$

Vedclass · Answer

(b) Magnetic field at the centre of circular loop
$B = \frac{{{\mu _0}}}{{4\pi }}\frac{{2\pi i}}{r} $

$\Rightarrow 0.5 	imes {10^{ - 5}} = \frac{{{{10}^{ - 7}} 	imes 2 	imes 3.14 	imes i}}{{5 	imes {{10}^{ - 2}}}}$
$i = 0.4 \,A$

The earth’s magnetic field at a given point is $0.5 \times {10^{ - 5}}\,Wb{\rm{ - }}{m^{ - 2}}$. This field is to be annulled by magnetic induction at the center of a circular conducting loop of radius $5.0\,cm$. The current required to be flown in the loop is nearly......$A$

Similar Questions

Two identical coils of radius $R$ and number of turns $N$ are placed perpendicular to each others in such a way that they have common centre. The current through them are $I$ and $I\sqrt 3$ . The resultant intensity of magnetic field at the centre of the coil will be (in $weber/m^2)2$

State and explain Biot-Savart law for the magnetic field produced by a current element. Give the direction of magnetic field and define the unit of it

An electron in a hydrogen atom revolves around its nucleus with a speed of $6.76 \times 10^6\,ms ^{-1}$ in an orbit of radius $0.52\,\mathring A$. The magnetic field produced at the nucleus of the hydrogen atom is $......T$.

Unit of magnetic permeability is

Which of the following figures correctly depicts the direction of magnetic field of a current-carrying coil ?