A $10\,\mu F$ capacitor and a $20\,\mu F$ capacitor are connected in series across a $200\;V$ supply line. The charged capacitors are then disconnected from the line and reconnected with their positive plates together and negative plates together and no external voltage is applied. What is the potential difference across each capacitor
  • A$\frac{{400}}{9}\,{\rm{V}}$
  • B$\frac{{800}}{9}\,V$
  • C$400\;V$
  • D$200\,V$
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
    In a region of space, suppose there exists a uniform electric field $\vec{E}=10 i\left(\frac{ v }{ m }\right)$. If a positive charge moves with a velocity $\vec{v}=-2 \hat{j}$, its potential energy
    View Solution
  • 2
    A point charge of magnitude $+ 1\,\mu C$ is fixed at $(0, 0, 0) $. An isolated uncharged spherical conductor, is fixed with its center at $(4, 0, 0).$ The potential and the induced electric field at the centre of the sphere is
    View Solution
  • 3
    There is a uniform electrostatic field in a region. The potential at various points on a small sphere centred at $P$, in the region, is found to vary between in the limits $589.0\,V$ to $589.8\, V$. What is the potential at a point on the sphere whose radius vector makes an angle of $60^o$ with the direction of the field ?........$V$
    View Solution
  • 4
    Two capacitors of equal capacity are first connected in parallel and then in series. The ratio of the total capacities in the two cases will be
    View Solution
  • 5
    Determine the electric field strength vector if the potential of this field depends on $x, y$ coordinates as $V=10$ axy
    View Solution
  • 6
    Assertion : Electric potential and electric potential energy are different quantities.

    Reason : For a system of positive test charge and point charge electric potential energy $=$ electric potential.

    View Solution
  • 7
    A force $F$ acts between sodium and chlorine ions of salt (sodium chloride) when put $1\,cm$ apart in air. The permittivity of air and dielectric constant of water are ${\varepsilon _0}$ and $K$ respectively. When a piece of salt is put in water electrical force acting between sodium and chlorine ions $1\,cm$ apart is
    View Solution
  • 8
    Two identical charged spheres are suspended by string of equal lengths. The string make an angle of $37^{\circ}$ with each other. When suspended in a liquid of density $0.7 \mathrm{~g} / \mathrm{cm}^3$, the angle remains same. If density of material of the sphere is $1.4 \mathrm{~g} / \mathrm{cm}^3$, the dielectric constant of the liquid is_____$\left(\tan 37^{\circ}=\frac{3}{4}\right)$.
    View Solution
  • 9
    How much work is required to carry a $6$ $\mu C$ charge from the negative terminal to the positive terminal of a $9\, V$ battery
    View Solution
  • 10
    Polar molecules are the molecules:
    View Solution