Home
Class 12
PHYSICS
Two brass plates are arranged horizontal...

Two brass plates are arranged horizontally , one 2 cm above the other. The plates are charged to a potential differnece of 6600 V. Now very fine liquid drops are sprayed into the space between the plates . Big drops collect at the bottom plate some drops go up and some remain statinary . How do you explain this ? If the radius of the stationary drops is `2 xx 10^(-6)` m and density of liquid 800 `kgm^(-3)` , calculate the charge carried by the stationary drops. Does this result confirm quantisation of charge?

Text Solution

Verified by Experts

The correct Answer is:
`7.962 xx 10^(-19)`C; yes drop carries charges 5 times the electronic charge
Promotional Banner

Topper's Solved these Questions

  • ELECTRIC FIELD AND POTENIAL

    NN GHOSH|Exercise EXERCISE|21 Videos

  • DYNAMO, MOTOR, TRANSFORMER

    NN GHOSH|Exercise EXERCISE|8 Videos

  • ELECTROMAGNETIC INDUCTION

    NN GHOSH|Exercise EXERICISES-B|18 Videos

Similar Questions

Explore conceptually related problems

A liquid drops hangs in equillibrium between two copper plates separated by a distacnce of 2cm and maintained at a potential difference of 600 volts. Calculate the charge on the drops if the radius of the drop is 0.1mm and density of the liquid is 800kg//m^(3)

A parallel plate capacitor with air between the plates is charged to a potential difference of 500 V and then insulated. A plastic plate is inserted between the plates filling the whole gap. The potential difference between the plates now becomes 75V. The dielectric constant of plastic is

If n drops, each charged to a potential V, coalesce to form a single drop. The potential of the big drop will be

A capacitor is charged to a potential difference of 100V and then it is connected across a resistor.After one second,the potential drop across the plates of the capacitor becomes 80V .Then after 2 sec the potential difference

A capacitor C is charged to a potential difference V and battery is disconnected. Now if the capacitor plates are brough close slowely by some distance:

512 identical drops of mercury are charged to a potential of 2V each. The drops are joined to form a single drop. The potential of this drop is ___ V.

A parallel plate air condenser is charged and then disconnected from the charging battery. Now the space between the plates is filled with a dielectric then, it electric field strength between the plates

Plates of a parallel plate capacitor, having a potential difference 100 V applied across them, carry a surface charge density of "50 nC cm"^(-2) . Spacing between the plates is

A charged drop of mass 3.2 xx 10^(-12) g floats between two horizontal parallel plates maintained at potential difference of 980 V and separation between the plates is 2 cm. The number of excess or deficient electrons on the drop is

If n drops, each of capacitance C and charged to a potential V, coalesce to form a big drop, the ratio of the energy stored in the big drop to that in each small drop will be

NN GHOSH-ELECTRIC FIELD AND POTENIAL-EXERCISE-B
  1. A certain charge Q is divided into two parts q and Q-q, wheich are the...

    Text Solution

    |

  2. A uniform electric field exists in the region between toe oppositely c...

    Text Solution

    |

  3. Two brass plates are arranged horizontally , one 2 cm above the other....

    Text Solution

    |

  4. Three charges -1 mu C,2 muC "and" 3 nuCare placed respectively at the ...

    Text Solution

    |

  5. Three small balls, each of mass 10 g , are suspended from a common po...

    Text Solution

    |

  6. In the Bohr model of the hydrogen atom, an electron revolves in a circ...

    Text Solution

    |

  7. Two equal positive point charges are sperated by a distance of 2a. A p...

    Text Solution

    |

  8. An alpha particle of velocity 1.6xx10^(7) ms^(-1) approaches a gold nu...

    Text Solution

    |

  9. Three charges -q, +q and -q are placed along a st. line at equal dista...

    Text Solution

    |

  10. Two concentric spherical shells of conducting material and of radii a ...

    Text Solution

    |

  11. Two equal charges, +Q each, are at a distance r from each other. A thi...

    Text Solution

    |

  12. An infinite number of charges, each equal to q are arranged in a line ...

    Text Solution

    |

  13. Four charges +q,+2q,+3q and +4q are placed at the four corners ABCD of...

    Text Solution

    |

  14. Two identical positive charges are placed at the diagonally opposite c...

    Text Solution

    |

  15. A charge Q is placed at each of the two opposite corners of a square ...

    Text Solution

    |

  16. A thin copper ring of radius a is charged with q units of electricity....

    Text Solution

    |

  17. A an electron is placed at the centre of the copper ring of problem 37...

    Text Solution

    |

  18. A thin half- ring of radiusb 20 cm is uniformly charged with a tot...

    Text Solution

    |

  19. A thin nonconducting ring of radius r has a linear charge density q=q0...

    Text Solution

    |

  20. A thin wire ring of radius r has an electric charge q. What is the ten...

    Text Solution

    |