Home
Class 12
PHYSICS
A dielectric slab of length l, width b, ...

A dielectric slab of length l, width b, thickness d and dielectric constant K fills the space inside a parallel plate capacitor. At t = 0, the slab begins to be pulled out slowly with speed y. At time t, the capacity of the capacitor is

A

`(epsi_0 b) /( d ) [ Kl - (k -1) v t]`

B

`(epsi_0 b )/( b ) [ Kl +K + vt]`

C

`(epsi_0 b )/(b ) [(kl +l ) vt ]`

D

`( epsi_0b )/(d) [ l+ (k-1) vt ]`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • APPENDICES ( REVISION EXERCISE )

    AAKASH SERIES|Exercise REVISION EXERCISE (CUTTENT ELECTRICITY )|108 Videos

  • APPENDICES ( REVISION EXERCISE )

    AAKASH SERIES|Exercise REVISION EXERCISE (MOVING CHANGES & MEGNETISM)|95 Videos

  • APPENDICES ( REVISION EXERCISE )

    AAKASH SERIES|Exercise REVISION EXERCISE (MAGNETISM AND MATTER )|52 Videos

  • ALTERNATING CURRENT

    AAKASH SERIES|Exercise EXERCISE - III|24 Videos

  • APPENDICES (REVISION EXERCISE)

    AAKASH SERIES|Exercise LAW OF MOTION|128 Videos

Similar Questions

Explore conceptually related problems

A parallel plate capacitor has plate of length 'l' width 'w' and separation of plates is 'd' . It is connected to a battery of emf V . A dielectric slab of the same thickness 'd' and of dielectric constant k=4 is being inserted between the plates of the capacitor . At what lenght of the slab inside plates , will the energy stored in the capacitor be two time the initial energy stored ?

A dielectric slab of thickness 1.0 cm and dielectric constant 5 is placed between the plates of a parallel plate capacitor of plate area 0.01 m^(2) and separation 2.0 cm. Calculate the change in capacity on introduction of dielectric. What would be on the change, if the dielectric slab were conducting?

Shown a parallel plate capacitor with plates of width b and length l . The separation between the platesis d. The plates are rigidly clamped and connected to a battery of emf V. A dielectric slab of thickness d and dielectric constant K is slowly inserted between the plates. (a) Calculate the energy of the system when a length x of the slab is introduced into the capacitor. (b) what force should be applied on the slab to ensure that is goes slowly into the capacitor? Neglect any effect of friction or gravity.

A parallel plate capacitor of capacitance C (without dielectric) is filled by dielectric slabs as shown in figure. Then the new capacitance of the capacitor is

If a dielectric slab of thickness t and area A is inserted in between the plates of a parallel plate capacitor of plate area A and distance between the plates d(d gt t) then find out capacitance of system. What do you predict about the dependence of capacitance on location of slab?

A slab of materail of dielectric constant K has the same area as the plates of a parallel plate capacitor but has thickness d//2 , where d is the separation between the plates. Find the expression for the capacitance when the slab is inserted between the plates.

Figure shows a parallel-plate capacitor with plates of width b and length l. The separation between the plates is d. The plates are rigidly clamped and connected to a battery of emf V. A dielectric slab of thickness d and dielectric constant K is slowly inserted between the plates. Calculate the energy of the system when a length x of the slab is introduced into the capacitor.

When a dielectric slab of thickness 6 cm is introduced between the plates of parallel plate condenser, it is found that the distance between the plates has to be increased by 4 cm to restore to capacity original value. The dielectric constant of the slab is

A slab of copper of thickness b is inserted in between the plates of parallel plate capacitor as shown in figure. The separation of the plate is d . If b=d//2 , then the ratio of capacities of the capacitor after and before inserting that slab will be

A slab of copper of thickness y is inserted between the plates of parallel plate capacitor as shown in figure. The separation between the plates is d. If y=d/4 , then the ratio of capacitance of the capacitor after nd before inserting the slab is

AAKASH SERIES-APPENDICES ( REVISION EXERCISE )-REVISION EXERCISE (ELECTRIC POTENTIAL & CAPACITANCE )
  1. A number of capacitors, each of capacitance 1 mu F and each one of whi...

    Text Solution

    |

  2. A parallel plate capcitor of capcitance 5 muF and plate separation 6 c...

    Text Solution

    |

  3. A dielectric slab of length l, width b, thickness d and dielectric con...

    Text Solution

    |

  4. A parallel plate capacitor having a separation between the plates d, p...

    Text Solution

    |

  5. If metal section of shape H is inserted in between two parallel plates...

    Text Solution

    |

  6. A and B are two points in a closed circuit. The potential difference a...

    Text Solution

    |

  7. Three condensers are connected as shown in series. If the insulated pl...

    Text Solution

    |

  8. A capacitor 1mF withstands a maximum voltage of 6KV while another capa...

    Text Solution

    |

  9. A battery of emf 20V is connect to two capacitors 1 mu F and 3 mu F in...

    Text Solution

    |

  10. A capacitor is made of a flat plate of area A and B second plate havin...

    Text Solution

    |

  11. If in the infinite series circuit, C = 9 mu F and C1 = 6 mu F then the...

    Text Solution

    |

  12. Consider the situation shown in the figure. The capacitor A has a char...

    Text Solution

    |

  13. The capacity of each condenser in the following fig. is .C.. Then the ...

    Text Solution

    |

  14. Four identical capacitors each rates as 10 mu F - 10V are supplied to ...

    Text Solution

    |

  15. Consider the situation shown in the figure. The capacitor A has a char...

    Text Solution

    |

  16. If the potential at A is 2000V the potential at B is

    Text Solution

    |

  17. The P.D between the points A and B is

    Text Solution

    |

  18. The Boolean equation for the given circuit is

    Text Solution

    |

  19. Two condensers of capacities 4mF and 6mF are connected to two cells as...

    Text Solution

    |

  20. In the given circuit P.D. between A and B in the steady state is

    Text Solution

    |