A galvanometer has $30$ divisions and a sensitivity $16\,\mu A/{\rm{div}}{\rm{.}}$ It can be converted into a voltmeter to read $3\, V$ by connecting
  • AResistance nearly $6 \,k\,\Omega $ in series
  • B$6\,k\,\Omega $ in parallel
  • C$500\,\Omega $ in series
  • D
    It cannot be converted
Medium
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
    A block of mass $m$ $\&$ charge $q$ is released on a long smooth inclined plane magnetic field $B$ is constant, uniform, horizontal and parallel to surface as shown. Find the time from start when block loses contact with the surface.
    View Solution
  • 2
    Gauss is unit of which quantity
    View Solution
  • 3
    If cathode rays are projected at right angles to a magnetic field, their trajectory is
    View Solution
  • 4
    An electron is projected normally from the surface of a sphere with speed $v_0$ in a uniform magnetic field perpendicular to the plane of the paper such that its strikes symmetrically opposite on the sphere with respect to the $x-$ axis. Radius of the sphere is $'a'$ and the distance of its centre from the wall is $'b'$ . What should be magnetic field such that the charge particle just escapes the wall
    View Solution
  • 5
    A conductor lies along the $z-$axis $a$ $-1.5$$ \le Z < 1.5\,m$ carries a fixed current of $10.0\ A$ in $ - {\hat a_z}$ direction (see figure). For a field $\vec B$ $=$ $3.0 \times  10^{-4}$  $e^{-0.2x}$ ${\hat a_y}\,T$ find the power required to move the conductor at constant speed to $x = 2.0\ m, y = 0\ m$ in $5 \times 10^{-3}\ s$. Assume parallel motion along the $x-$axis........$ W$
    View Solution
  • 6
    Proton with kinetic energy of $1\;MeV$ moves from south to north. It gets an acceleration of $10^{12}\; \mathrm{m} / \mathrm{s}^{2}$ by an applied magnetic field (west to east). The value of magnetic field :.......$mT$ (Rest mass of proton is $1.6 \times 10^{-27} \;\mathrm{kg}$ )
    View Solution
  • 7
    The magnetic induction due to an infinitely long straight wire carrying a current $i$ at a distance $r$ from wire is given by
    View Solution
  • 8
    Two long straight parallel conductors separated by a distance of $0.5\,m$ carry currents of $5\,A$ and $8\,A$ in the same direction. The force per unit length experienced by each other is
    View Solution
  • 9
    A long straight wire of radius a carries a steady current $i$. The current is uniformly distributed across its cross section. The ratio of the magnetic field at $ a/2$ and $2a$ is
    View Solution
  • 10
    Two infinitely long parallel wires carry equal current in same direction. The magnetic field at a mid point in between the two wires is
    View Solution