A current $i$ $ampere$ flows along an infinitely long straight thin walled tube, then the magnetic induction at any point inside the tube is
  • A$\infty $
  • B
    Zero
  • C$\frac{{{\mu _0}}}{{4\pi }}.\frac{{2i}}{r}\,{\rm{Tesla}}$
  • D$\frac{{2i}}{r}\,{\rm{Tesla}}$
AIEEE 2004, Easy
art

Download our app
and get started for free

Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*

Similar Questions

  • 1
    Current sensitivity of a moving coil galvanometer is $5\,div/mA$ and its voltage sensitivity (angular deflection per unit voltage applied) is $20\,div/V$. The resistance of the galvanometer is ................. $\Omega$
    View Solution
  • 2
    A microammeter has a resistance of $100\,\Omega $ and full scale range of $50\,\mu A$. It can be used as a voltmeter or as a higher range ammeter provided a resistance is added to it. Pick the correct range and resistance combination
    View Solution
  • 3
    A current carrying coil is subjected to a uniform magnetic field. The coil will orient so that its plane becomes
    View Solution
  • 4
    Motion of a moving electron is not affected by
    View Solution
  • 5
    In figure two parallel infinitely long current carrying wires are shown. If resultant magnetic field at point $A$ is zero. Then determine current $I.$ (in $A$)
    View Solution
  • 6
    An infinitely long straight conductor carries a current of $5 \,\mathrm{~A}$ as shown. An electron is moving with a speed of $10^{5} \, \mathrm{~m} / \mathrm{s}$ parallel to the conductor. The perpendicular distance between the electron and the conductor is $20 \, \mathrm{~cm}$ at an instant. Calculate the magnitude of the force experienced by the electron at that instant in $\times 10^{-20} \,N$
    View Solution
  • 7
    A mass spectrometer is a device which select particle of equal mass. An iron with electric charge $q > 0$ and mass $m$ starts at rest from a source $S$ and is accelerated through a potential difference $V$. It passes $\rho$ through a hole into a region of constant magnetic field $\vec B\,$ perpendicular to the plane of the paper as shown in the figure. The particle is deflected by the magnetic field and emerges through the bottom hole at a distance $d$ from the top hole. The mass of the particle is 
    View Solution
  • 8
    The magnetic field at the centre of coil of $n$ $turns$, bent in the form of a square of side $2l$ , carrying current $i$, is
    View Solution
  • 9
    An $\alpha$ particle is moving along a circle of radius $R$ with a constant angular velocity $\omega $. Point $A$ lies in the same plane at a distance $2R$ from the centre. Point $A$ records magnetic field produced by $\alpha$ particle. If the minimum time interval between two successive times at which $A$ records zero magnetic field is $‘t’,$ find the angular speed $\omega $, in terms of $t.$
    View Solution
  • 10
    The magnetic force between wires as shown in figure is :-
    View Solution