Home
Class 12
PHYSICS
Excess electrons are placed on a small l...

Excess electrons are placed on a small lead sphere of mass `6.90 ` g so that its net charge is `-3.20 xx 10^(-9)C`. Find the number of excess electorns ( in terms of `xx 10^(10))` on the sphere.

Text Solution

Verified by Experts

`qq=n_(e)e` or `n_(e)=(-3.20xx10^(-9))/(-1.6xx10^(-9))=2.0xx10^(10)`
Promotional Banner

Topper's Solved these Questions

  • MISCELLANEOUS VOLUME 3

    CENGAGE PHYSICS|Exercise Fill in the blanks|10 Videos

  • MISCELLANEOUS VOLUME 3

    CENGAGE PHYSICS|Exercise True and False Type|5 Videos

  • MISCELLANEOUS VOLUME 3

    CENGAGE PHYSICS|Exercise Comprehension Type|94 Videos

  • MECHANICAL PROPERTIES OF SOLIDS

    CENGAGE PHYSICS|Exercise Question Bank|4 Videos

  • MISCELLANEOUS VOLUME 5

    CENGAGE PHYSICS|Exercise Integer|12 Videos

Similar Questions

Explore conceptually related problems

An ebonite rod acquires a negative charge of 3.2 xx 10^(-10) C. The number of excess electrons it has is given by

An ebonite rod acquires a negative change of 6.4 xx 10^-10 C . The number of excess electrons it has is

An object has an excess charge of (-1.92xx10^(10-7)) C . How many excess electrons does it have ?

A sphere of lead of mass 10 g has net charge -25 xx 10^(-9)C . (i) Find the number of excess electrons on the sphere. (ii) How many excess electrons are per lead atom ? Atomic number of lead is 82 and its atomic mass is 207 g/mol.

The electronic charge is 1.6xx10^(-19) coulomb. If a body carries a negative charge of 9.6xx10^(-10) coulombs, what is the number of excess electrons on the body?

In a Millikan's oil drop experiment the charge on an oil drop is calculated to be 16.35 xx 10^(-19) C . The number of excess electrons on the drop is

An electron is placed at the centre of a Conducting sphere of radius 0.2 metre having a charge 5xx10^(-2) coulomb.The force on the electron is

The charge on the electron is 1.6 xx 10^(-19) C . The order of magnitude is

A conducting sphere of radius 10 cm is given a charge of +2xx10^(-8)C . What will be its potential?

An electric charge of 8.85 xx 10^(-13)C is placed at the centre of a sphere of radius 1 m. The electric flux through the sphere is

CENGAGE PHYSICS-MISCELLANEOUS VOLUME 3-Interger Answer type
  1. Two point charges q1=q2=2muC are fixed at x1=+3 m and x2=-3m as shown ...

    Text Solution

    |

  2. Two concentric spherical conducting shells of radii R and 2R carry cha...

    Text Solution

    |

  3. The capacitance of a capacitor between 4//3 times its original value i...

    Text Solution

    |

  4. A particle having charge that of an electron and mass 1.6xx10^(-30)kg ...

    Text Solution

    |

  5. The electric field in a region is radially outward with magnitude E = ...

    Text Solution

    |

  6. A wire is bent in the form of a regular hexagon and a total charge q i...

    Text Solution

    |

  7. A Uniform electric field of 10NC ^(-1) exists in the vertically downwa...

    Text Solution

    |

  8. The kinetc energy of a chargd particle decreased by 10 J as it moves f...

    Text Solution

    |

  9. A charge of 20 muC is placed on the positive plante of on isolated p...

    Text Solution

    |

  10. A capacitor with stored energy 4.0J is connected with an identical ca...

    Text Solution

    |

  11. Excess electrons are placed on a small lead sphere of mass 6.90 g so ...

    Text Solution

    |

  12. Two mutually perpendicular infinite wires along x-axis and y-axis carr...

    Text Solution

    |

  13. The electric field strength depends only on the x, y, and z coordinate...

    Text Solution

    |

  14. A positive charge +q1 is located to the left of a negative charge -q2....

    Text Solution

    |

  15. Figure shows, in cross section , two solid spheres with uniformly dist...

    Text Solution

    |

  16. A positively charged particle starts at rest 25 cm from a second posit...

    Text Solution

    |

  17. In the circuit shown, all capacitors are identical. Initially, the swi...

    Text Solution

    |

  18. Two small spheres are attached to the ends of a long light nonconducti...

    Text Solution

    |

  19. A solid sphere of radius R has a charge Q distributed in its volume wi...

    Text Solution

    |

  20. An infinitely long solid cylinder of radius R has a uniform volume ch...

    Text Solution

    |