Home
Class 12
PHYSICS
A 100 volt battery is connected across t...

A 100 volt battery is connected across the series combination of the two capacitors of `4muF and 8muF`. The energy stored in the series combination is

A

`3/4xx10^(-2)J`

B

`4/3xx10^(-2)J`

C

0.5J

D

1 J

Text Solution

Verified by Experts

The correct Answer is:
B
`E=1/2C_(s)V^(2)=1/2((C_(1)C_(2))/(C_(1)+C_(2)))V^(2)`
`=(32xx10^(-6)xx10^(4))/(2xx12)=4/3xx10^(-2)J`
Promotional Banner

Topper's Solved these Questions

  • ELECTRONS AND PHOTONS

    NIKITA PUBLICATION|Exercise MCQs|162 Videos

  • GRAVITATION

    NIKITA PUBLICATION|Exercise Multiple Choice Questions|409 Videos

Similar Questions

Explore conceptually related problems

A 200 V battery is connected across the combination of capacitors of capacities 5muF and 10muF in series. The charge on each capacitor is

Six identical capacitors, each of 1muF are joined in parallel and the combination is put across a battery of e.m.f. 2V. Now, the battery is disconnected and the capacitors are joined in series. The total energy are potential difference across the series combination is

Two identical capacitors of 10 pF each are connected in series across a 50 V battery. Calculate the electrostatic energy stored in the combination. If these were connected in parallel across the same battery, find out the value of the energy stored in this combination.

Parallel combination of two condensers of capacities 2muF and 4muF and the series combination of two condensers of capacities 6muF and 12muF are connected in series. The equivalent capacity of entire combination is

Three capacitors of 3muF each are connected in series. This combination is connected in series to another combination of three capacitors of 1muF each in parallel. Find the total capacitance.

Two capacitors of unknown capacitance C_(1) and C_(2) are connected first in series and then in parallel, across a battery of 100V. If the energy stored in the two combinations is 0.045 J and 0.25 J respectively determine the values of C_(1) and C_(2) . Also calculate the charge on each capacitor in parallel combination.

The ratio of the resultant capacities when three capacitors of 2muF, 4muF and 6muF are connected first in series and then in parallel is

Two capacitors of capacitances 3muF and 5muF respectively are connected in parallel and this combination is connected in series with a third capacitor of capacitance 2muF . A potential difference of 100 V is applied across the entire combination. The charge and the potential difference across the third capacitor is

NIKITA PUBLICATION-ELECTROSTATICS-Multiple Choice Questions
  1. A 200 V battery is connected across the combination of capacitors of c...

    Text Solution

    |

  2. Two capacitors of capacitances 10muF and 20muF are connected in series...

    Text Solution

    |

  3. A 100 volt battery is connected across the series combination of the t...

    Text Solution

    |

  4. When two capacitances are connected in series, the equivalent capacita...

    Text Solution

    |

  5. Two capacitors, one of 4muF and the other of 5muF, are connected in pa...

    Text Solution

    |

  6. Two condensers of capacities 8muF, and 4muF are connected in parallel ...

    Text Solution

    |

  7. A capacitor C(1) is charged to a p.d.V. The charging battery is then r...

    Text Solution

    |

  8. An infinite number of capacitors, having capacitances 1muF, 2muF, 4muF...

    Text Solution

    |

  9. Two capacitors of 3 pF and 6pF are connected in series and a potential...

    Text Solution

    |

  10. A parallel plate capacitor having a plate separation of 2mm is charged...

    Text Solution

    |

  11. The capacitors of 8muF, 8muF and 4muF are connected in parallel across...

    Text Solution

    |

  12. Five capacitors each of 10muF capacitance are connected as shown to a ...

    Text Solution

    |

  13. In the given figure the capacitors C(1), C(3), C(4),C(5) have a capaci...

    Text Solution

    |

  14. The net capacitance of system of capacitors in figure between points A...

    Text Solution

    |

  15. The equivalent capacity between the points A and B in the following fi...

    Text Solution

    |

  16. The p.d. across the capacitance of 2muF in the figure along with is

    Text Solution

    |

  17. A circuit is shown in the figure below. Find out the charge of the con...

    Text Solution

    |

  18. Four condensers each of capacity 4muF are connected as shown in the ad...

    Text Solution

    |

  19. In the following circuit, the resultant capacitance between A and B is...

    Text Solution

    |

  20. The four capacitors, each of 25 muF are connected as shown in figure. ...

    Text Solution

    |