Home
Class 12
PHYSICS
What is the magnitude of a point charge ...

What is the magnitude of a point charge due to which the electric field `30cm` away the magnitude `2`?
`[1//4 pi epsilon_(0)=9xx10^(9)Nm^(2)//C^(2)]`

A

`2xx10^(-11)` coulomb

B

`3xx10^(-11)` coulomb

C

`5xx10^(-11)` coulomb

D

`9xx10^(-11)` coulomb

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATICS

    ERRORLESS |Exercise Ordinary Thinking Objective Questions (Electric Dipole)|38 Videos

  • ELECTROSTATICS

    ERRORLESS |Exercise Ordinary Thinking Objective Questions (Electric Flux and Gauss.s Law)|28 Videos

  • ELECTROSTATICS

    ERRORLESS |Exercise Ordinary Thinking Objective Questions (Electric Flux and Gauss.s Law)|28 Videos

  • ELECTRONICS

    ERRORLESS |Exercise Selv Evaluation Test|23 Videos

  • HEATING AND CHEMICAL EFFECT OF CURRENT

    ERRORLESS |Exercise Self Evaluation Test|14 Videos

Similar Questions

Explore conceptually related problems

An infinite number of electric charges each equal to 5 nano-coulomb (magnitude) are placed along X -axis at x=1 cm, x=2 cm,x=8cm ……and so on. In the setup if the consecutive charges have opposite sign, then the electrical field in Newton/Coulomb at x=0 is (1/(4piepsilon_(0))= 9xx10^(9)N-m^(2)//C^(2))

A cyclinder of radius 5 mm and surface charge density of 2 mu C//m^(2) is surrounded by a medium of dielectric constant 6.28. The magnitude of electric field at a point 2 m away from the axis of the cyclinder is ((1)/(4)piepsi_(0) = 9xx10^(9) Nm^(2)//C^(2))

The electric field due to a charge at a distance of 3 m from it is 500 NC^(-1) . The magnitude of the charge is [(1)/(4 pi epsi_(0)) = 9 xx 10^(9) N - m^(2)//C^(2)]

The value of electric point charge which will produce 2N/C electric field at a point 30cm away will be :

An infinitely long uniform linear charge distribution has a charge density 4 muC /m. what is the electric field at a point at a perpendicular distance of 3.6 cm from the line? Given: (1)/(4piepsi_(0))=9xx10^(9)Nm^(2)//C^(2)

Three particles, each having a charge of 10 mu C are placed at the coners of an equilateral triangle of side 10 cm . The electrostatic potential energy of the system is (Given (1)/(4pi epsilon_(0)) = 9 xx 10^(9)N-m^(2)//C^(2))

The surface charge density of a conductor is 12xx10^(-12) C//m^(2) .If the conductor is surrounded by a medium of dielectric constant 3.14, the magnitude of electric field just outside the conductor is ((1)/(4 piepsi_(0)) = 9xx10^(9) Nm^(2)//C^(2))

ERRORLESS -ELECTROSTATICS -Ordinary Thinking Objective Questions (Electric Field and Potential)
  1. A metallic solid sphere is placed in a uniform electric fied. The line...

    Text Solution

    |

  2. The distance between a proton and electron both having a charge 1.6xx1...

    Text Solution

    |

  3. What is the magnitude of a point charge due to which the electric fiel...

    Text Solution

    |

  4. two charge +q and -q are situated at a certain distance. At the point ...

    Text Solution

    |

  5. In the firgure the charge Q is at the centre of the circle. Work done...

    Text Solution

    |

  6. A mass m=20 g has a charge q= 3.0 mC. It moves with a velocity of 20 m...

    Text Solution

    |

  7. Four idenbtial charges +50 mu C each are placed, one at each corner of...

    Text Solution

    |

  8. In Millike's oil drop experiment an oil drop carrying a charge Q is he...

    Text Solution

    |

  9. A charge of 5 C experiences a force of 5000N when it is kept in a unif...

    Text Solution

    |

  10. Two insulated charged conducting spheres of radii 20 cm and 15 cm resp...

    Text Solution

    |

  11. Equal charges q are placed at the vertices A and B of an equilatral tr...

    Text Solution

    |

  12. Two charges of equal magnitude q are placed in air at a distance 2a ap...

    Text Solution

    |

  13. Two point charges 100 mu C and 5 mu C are placed at points A and B res...

    Text Solution

    |

  14. The unit of intensity of electric field is

    Text Solution

    |

  15. Equal charges are given to two spheres of different radii. The potenti...

    Text Solution

    |

  16. A chrage of 5 C is given a displacement of 0.5 m. The work done in the...

    Text Solution

    |

  17. The electric potential V is givne as a function of distance x (metre) ...

    Text Solution

    |

  18. Two metal pieces having a potential difference of 800V are 0.02 m apar...

    Text Solution

    |

  19. The figure shows some of the electric field lines corresponding to an ...

    Text Solution

    |

  20. Two spheres of radius a and b respectively are charged and joined by a...

    Text Solution

    |