Home
Class 12
PHYSICS
Potenlials of points P and Q are 10V an...

Potenlials of points P and Q are 10V and -4 V respectively. Work done in taking 100 electrons from P to Q ........

A

`22.4xx10^(-16) J`

B

`2.24 xx10^(-16) J`

C

`-9.6xx10^(-17) J`

D

`9.6 xx10^(-17) ` J

Text Solution

Verified by Experts

The correct Answer is:
A, B, D

Let `DeltaV=V_(Q)-V_(P)=-4-10=-14V`
`:. W = q(V_(2)-V_(1))=(V_(Q)-V_(P))q`
`=(-4-10)(-1.6xx10^(-19)xx100) ( because q = `ne )
`=14xx1.6xx10^(-17)=2.24xx10^(-16)J`
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    KUMAR PRAKASHAN|Exercise Section D ( MCQs asked in Cometitive Exams )|39 Videos
  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    KUMAR PRAKASHAN|Exercise Section C ( NCERT Exemplar Solution ) ( Long Answer Type Questions )|12 Videos
  • ELECTROMAGNETIC WAVES

    KUMAR PRAKASHAN|Exercise BOARD.S QUESTION PAPER MARCH - 2020 (PART - B) SECTION - C|5 Videos
  • MAGNETISM AND MATTER

    KUMAR PRAKASHAN|Exercise SECTION D Multiple Choice Questions (MCQs) (MCQs asked in Competitive Exams) MCQs asked in Board Exam and GUJCET|7 Videos

Similar Questions

Explore conceptually related problems

Potentials of points P and Q are 10 V and - 4 V respectively. Work done in taking 100 electrons from P to Q ........

The ionization potential of hydrogenic ions P and Q are V_(P) and V_(Q) respectively. If V_(Q) lt V_(P) then radii ......

Two charges - q and + q are located at points A(0, 0, - a) and B(0, 0, + a) respectively, work done in moving small test charge from point P(7, 0, 0) to Q(- 3, 0, 0) is ...... .

In an electric field. electric potential at point A is 40 V and that at point B is 90 V. The work to be done in taking 2 C charge from point A to point B is …………….. .

A point source emits sound equally in all directions in a non-absorbing medium. Two points P and Q are at distance of 2 m and 3 m respectively from the source. The ratio of the intensities of the waves at P and Q is ......

Potential at a point A is 3 volt and at a point B is 7 V , an electron is moving towards A form B .work done

A non viscous liquid of constant density 10^(3) kg//m^(3) flows in stream line motion along a vertical tube PQ of variable cross-section. Height of P and Q are 2m and 2.5m respectively. Area of tube at Q is equal to 3 times the area of tube at 'P'. Then work done per unit volume by pressure as liquid flows from P and Q. Speed of liquid at 'P' is 3 m//s .

Potential difference between points P and Q would be ...... .

If the distances of two points P and Q from the focus of a parabola y^2=4x are 4 and 9,respectively, then the distance of the point of intersection of tangents at P and Q from the focus is

KUMAR PRAKASHAN-ELECTROSTATIC POTENTIAL AND CAPACITANCE-Section D ( Multiple Choice Questions (MCQs) )
  1. Electric field on surfaces of two spheres of radius r(1) and r(2) are...

    Text Solution

    |

  2. Surface churgc densities on the spheres of radius r(1) and r(2) are s...

    Text Solution

    |

  3. Potenlials of points P and Q are 10V and -4 V respectively. Work done...

    Text Solution

    |

  4. A point P al a certain distance from charge Q has electric potential 6...

    Text Solution

    |

  5. The spheres of radius r and R having charge q and Q respectively on th...

    Text Solution

    |

  6. The spherical shell has radius r. The potential difference V is betwee...

    Text Solution

    |

  7. The radius of a charged hollow sphere is 10 cm. If V is the potential ...

    Text Solution

    |

  8. Electrostatic potential is ...... physical quantity.

    Text Solution

    |

  9. Kinetic energy of a charged particle decreases by 100 J when it is bro...

    Text Solution

    |

  10. Electric potential at 5 can distance from centre of shell of 14 cm rad...

    Text Solution

    |

  11. A particle having mass 1 g and electric charge 10^(-8) C travels from...

    Text Solution

    |

  12. The electric potential due to any point electric dipole varies as .......

    Text Solution

    |

  13. Two charges - q and + q are located at points A(0, 0, - a) and B(0, 0,...

    Text Solution

    |

  14. The dipole moment of a dipole is 4 xx 10^(-9) Cm. The po1ential of a p...

    Text Solution

    |

  15. 10 muC charge Is placed on each vertex of equilateral triangle of 10 c...

    Text Solution

    |

  16. For a point on the axis of the electric dipole theta = 0 and theta = p...

    Text Solution

    |

  17. Potential energy of an electric dipole is minimum (Negatively maximum)...

    Text Solution

    |

  18. When a n electric dipole is in st able equilibrium, in uniform electri...

    Text Solution

    |

  19. A surface, value of electric potential on whichis same at all the poin...

    Text Solution

    |

  20. Angle between equipotential surface and electric field is ......

    Text Solution

    |