Download App
A long straight metal rod has a very long hole of radius $‘a’$ drilled parallel to the rod axis as shown in the figure. If the rod carries a current $‘i’$ find the value of magnetic induction on the axis of the hole, where $OC = c$
  • A$\frac{{{\mu _0}ic}}{{\pi \left( {{b^2} - {a^2}} \right)}}$
  • B$\frac{{{\mu _0}ic}}{{2\pi \left( {{b^2} - {a^2}} \right)}}$
  • C$\frac{{{\mu _0}i\left( {{b^2} - {a^2}} \right)}}{{2\pi c}}$
  • D$\frac{{{\mu _0}ic}}{{2\pi {a^2}{b^2}}}$
Advanced
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.*
Download App

Similar Questions

  • 1
    A circular coil of diameter $7\,cm$ has $24$ $turns$ of wire carrying current of $ 0.75\,A$. The magnetic moment of the coil is
    View Solution
  • 2
    Two protons $A$ and $B$ move parallel to the $x$-axis in opposite directions with equal speeds $v$. At the instant shown, the ratio of magnetic force and electric force acting on the proton $A$ is ( $c=$ speed of light in vacuum)
    View Solution
  • 3
    What is the net force on the square coil
    View Solution
  • 4
    The figure shows three situations when an electron with velocity $\vec v$ travels through a nuniform magnetic field $\vec B$ . In each case, what is the direction of magnetic force on the electron?
    View Solution
  • 5
    A current $I$ flows along the length of a thin walled, long metallic hollow cylinder of radius $R$, distributed uniformly on its surface then pressure on the wall will be
    View Solution
  • 6
    Tesla is the unit of
    View Solution
  • 7
    A beam of electrons and protons move parallel to each other in the same direction, then they
    View Solution
  • 8
    A particle having some charge is projected in $x-y$ plane with a speed of $5\ m/s$ in a region having uniform magnetic field along $z-$ axis. Which of the following cannot be the possible value of velocity at any time ?
    View Solution
  • 9
    Two wires $A$ and $B$ are carrying currents $I_1$ and $I_2$ as shown in the figure. The separation between them is $d$. A third wire $C$ carrying a current $I$ is to be kept parallel to them at a distance $x$ from $A$ such that the net force acting on it is zero. The possible values of $x$ are
    View Solution
  • 10
    In an ammeter, $5 \%$ of the main current passes through the galvanometer. If resistance of the galvanometer is G, the resistance of ammeter will be :
    View Solution