Home
Class 12
PHYSICS
Show that the ratio of electric force an...

Show that the ratio of electric force and gravitational force between a proton and an electron is `(ke^2)/(Gm_cm_p)=~2.4xx10^(39)`

Promotional Banner

Topper's Solved these Questions

  • ELECTOSTATIC POTENTIAL AND CAPACITANCE

    R G PUBLICATION|Exercise EXERCISE|92 Videos

  • ELECTROMAGNETIC INDUCTION

    R G PUBLICATION|Exercise EXERCISE|84 Videos

Similar Questions

Explore conceptually related problems

What is the ratio of electric and magnetic force between two moving charges.

Calculate the magnitute of electrostatic force between a proton and an electron separated by a distance 0.5.A Give that magnitude of charge of proton and electron to be 1.6xx10^(-19) C each

What is the magnitude of the gravitational force between the earth and a 1 kg object on its surface? (Mass of the earth is 6 x 10^24 kg and radius of the earth 6.4 x 10^6 m.)

If the distance between 2 objects is doubled then how will the gravitational force between them change?

A rocket is fired from the earth towards the sun. At what distance form the earth's centre is the gravitational force on the rocket zero? Mass of the sun = 2 xx 10^20 kg and mass of earth = 6 xx 10^24 kg and orbital radius 1.5 xx 10^-8 km.

The electric field produced due to an electron is just sufficient to balance the gravitational force on another electron located above the first. Find the distance between the two electrons.

Calculate the electrostatic force in hydrogen atom in which the electron and proton are about 5.3*10^-11 metre apart.

R G PUBLICATION-ELECTRIC CHARGES AND FIELDS-EXERCISE
  1. Show that the flux delta Phi of electric field E through a small area ...

    Text Solution

    |

  2. How many electron must be remove from a piece of metal to give it a +v...

    Text Solution

    |

  3. Show that the ratio of electric force and gravitational force between ...

    Text Solution

    |

  4. Write the properties of electric lines of force and define neutral poi...

    Text Solution

    |

  5. Calculate the electric dipole moment of an electron and proton 5nm apa...

    Text Solution

    |

  6. An electron is released from rest in a uniform electric field of magni...

    Text Solution

    |

  7. Calculate the electric potential for a point charge.

    Text Solution

    |

  8. Distinguish between conductors and insulators .Give examples.

    Text Solution

    |

  9. Write the procedure of experiment of charging two metal spherical bodi...

    Text Solution

    |

  10. How can you charge a metal sphere positively?

    Text Solution

    |

  11. State two basic properties of electric charges.

    Text Solution

    |

  12. Apply Gauss's law to derive the expression for electric field intensit...

    Text Solution

    |

  13. Write the unit of Electric field

    Text Solution

    |

  14. Give the SI unit of electric flux.

    Text Solution

    |

  15. Write the unit of Vector areas element

    Text Solution

    |

  16. What is quantization of charge?

    Text Solution

    |

  17. If the electric filed is given by 6 hati + 3hat j+ 3 hat k calculate t...

    Text Solution

    |

  18. Deduce the expression of field at P due to a uniformly charged thin sp...

    Text Solution

    |

  19. "The total charge of the isolated system is always conserved". How?

    Text Solution

    |

  20. How Coulomb's law agrees with the Newton's third law?

    Text Solution

    |