If an ammeter is to be used in place of a voltmeter then we must connect with the ammeter a
  • A
    Low resistance in parallel
  • B
    High resistance in parallel
  • C
    High resistance in series
  • D
    Low resistance in series
AIEEE 2002, 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
    The current sensitivity of a moving coil galvanometer increases by $20 \%$ when its resistance is doubled. Calculate, by what factor does the voltage sensitivity change?
    View Solution
  • 2
    Two long, straight wires carry equal currents in opposite directions as shown in figure. The separation between the wires is $5.0 \mathrm{~cm}$. The magnitude of the magnetic field at a point $P$ midway between the wires is __________$\mu \mathrm{T}$ (Given : $\mu_0=4 \pi \times 10^{-7} \mathrm{TmA}^{-1}$ )
    View Solution
  • 3
    A galvanometer having a resistance $G$ and current $I_g$ flowing in it, produces full scale defection. If $S_1$ is the value of shunt which converts it into an ammeter of range $0-I$ and $S_2$ is the value of shunt for range $0-8I$ . Then the ratio $\frac {S_1}{S_2}$ will be
    View Solution
  • 4
    Two concentric circular loops, one of radius $R$ and the other of radius $2 R$, lie in the $x y$-plane with the origin as their common center, as shown in the figure. The smaller loop carries current $I_1$ in the anti-clockwise direction and the larger loop carries current $I_2$ in the clockwise direction, with $I_2>2 I_1 . \vec{B}(x, y)$ denotes the magnetic field at a point $(x, y)$ in the $x y$-plane. Which of the following statement($s$) is(are) current?

    $(A)$ $\vec{B}(x, y)$ is perpendicular to the $x y$-plane at any point in the plane

    $(B)$ $|\vec{B}(x, y)|$ depends on $x$ and $y$ only through the radial distance $r=\sqrt{x^2+y^2}$

    $(C)$ $|\vec{B}(x, y)|$ is non-zero at all points for $r$

    $(D)$ $\vec{B}(x, y)$ points normally outward from the $x y$-plane for all the points between the two loops

    View Solution
  • 5
    A horizontal overhead powerline is at height of $4\ m$ from the ground and carries a current of $100\ A$ from east to west. The magnetic field directly below it on the ground is. ${\mu _o}$$=4$$\pi $$ \times  10^{-7}$ $\frac{{Tm}}{A}$
    View Solution
  • 6
    A galvanometer of resistance $100\,\Omega $ has $50\, divisions$ on its scale and has sensitivity of $20\,\mu A / division$. It is to be converted to a voltmeter with three ranges, of $0-2\, V$, $0-10\, V$ and $0-20\, V$. The appropriate circuit to do so is
    View Solution
  • 7
    When a current of $5\ mA$ is passed through a galvanometer having a coil of resistance $15\ \Omega$, it shows full scale deflection. The value of the resistance to be put in series with the galvanometer to convert it into to voltmeter of range $0 - 10\ V$ is
    View Solution
  • 8
    A circular coil ‘$A$’ has a radius $R$ and the current flowing through it is $I$. Another circular coil ‘$B$’ has a radius $2R$ and if $2I$ is the current flowing through it, then the magnetic fields at the centre of the circular coil are in the ratio of (i.e.${B_A}$ to ${B_B}$)
    View Solution
  • 9
    A current carrying small loop behaves like a small magnet. If $A$ be its area and $M$ its magnetic moment, the current in the loop will be
    View Solution
  • 10
    A straight steel wire of length $‘\ell ’$ has a magnetic moment $‘M’$. It is bent in $L-$ shape. The new magnetic moment is
    View Solution