Three charges $q, \sqrt 2q, 2q$ are placed at the corners $A, B$ and $C$ respectively of the square $ABCD$ of side $'a'$ then potential at point $'D'$
  • A$\frac{{2kq}}{a}$
  • B$\frac{{4kq}}{a}$
  • C$\frac{{kq}}{a}(1 + \sqrt 2 )$
  • D$\frac{{kq}}{a}\,\left( {\frac{{1 + \sqrt 2 }}{{\sqrt 2 }}} \right)$
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
    $N$ identical spherical drops charged to the same potential $V$ are combined to form a big drop. The potential of the new drop will be
    View Solution
  • 2
    Seven capacitors each of capacity $2\,\mu F$ are to be so connected to have a total capacity $\frac{{10}}{{11}}\,\mu F$. Which will be the necessary figure as shown
    View Solution
  • 3
    The two thin coaxial rings, each of radius $'a'$ and having charges $+{Q}$ and $-{Q}$ respectively are separated by a distance of $'s'.$ The potential difference between the centres of the two rings is :
    View Solution
  • 4
    Two parallel plate capacitors have their plate areas $100 \,cm ^2$ and $500 \,cm ^2$ respectively. If they have the same charge and potential and the distance between the plates of the first capacitor is $0.5 \,mm$, then the distance between the plates of the second capacitor is ........ $cm$
    View Solution
  • 5
    A parallel plate capacitor having a plate separation of $2\, mm$ is charged by connecting it to a $300\, V$ supply. The energy density is.....$J/m^3$
    View Solution
  • 6
    A capacitor of capacity $C$ has charge $Q$ and stored energy is $W$. If the charge is increased to $2Q$, the stored energy will be
    View Solution
  • 7
    Two capacitors $C_1 = 4\  \mu F$ and $C_2 = 2\ \mu F$ are charged to same potential $ V = 500\  Volt$, but with opposite polarity as shown in the figure. The switches $S_1$ and $S_2$ are closed.
    View Solution
  • 8
    The electric potential at a distance of $3 \,m$ on the axis of a short dipole of dipole moment $4 \times 10^{-12}$ coulomb-meter is ......... $mV$
    View Solution
  • 9
    Initially the circuit is in steady state. Now one of the capacitor is filled with dielectric of dielectric constant $2$ . Find the heat loss in the circuit due to insertion of dielectric
    View Solution
  • 10
    The plates of a parallel plate capacitor are charged up to $100\, volt$. A $2\, mm$ thick plate is inserted between the plates, then to maintain the same potential difference, the distance between the capacitor plates is increased by $1.6\, mm$. The dielectric constant of the plate is
    View Solution