Home
Class 12
PHYSICS
Two points P and Q are maintained at the...

Two points P and Q are maintained at the potentials of 10V and -4V, respectively. The work done in moving 100 electrons from P to Q is:

A

`9.60xx10^(-17)J`

B

`-2.24xx10^(-16)J`

C

`2.24xx10^(-16)J`

D

`-9.60xx10^(-17)J`

Text Solution

Verified by Experts

The correct Answer is:
C

`W_(PQ)=q(V_(Q)-V_(P))=(-100xx1.6xx10^(-19))(-4-10)`
`=+2.24xx10^(-16)J`
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    DISHA PUBLICATION|Exercise EXERCISE 2: CONCEPT APPLICATOR|24 Videos
  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    DISHA PUBLICATION|Exercise EXERCISE 2: CONCEPT APPLICATOR|24 Videos
  • ELECTROMAGNETIC WAVES

    DISHA PUBLICATION|Exercise Exercise - 2 : Concept Applicator|30 Videos
  • GRAVITATION

    DISHA PUBLICATION|Exercise EXERCISE-2|30 Videos

Similar Questions

Explore conceptually related problems

(i) Can two equaipotential surfaces intersect each other ? Give reasons (ii) Two charges -q and +q are located at point A (0, 0 -a) and B(0, 0, +a) respectively. How much work is done in moving a test charge from point P (7, 0, 0) " to " Q(-3, 0, 0) ?

Two charges +q and -q are located at points A(0,0. -2) and B(0,0,2) respectively. How much work will be done in moving a test charge from point P (4,0,0) and Q(-5,0,0) ?

The electric potential at. Point A is 20 V and B is – 20 . The work done by an external force in moving electron slowly from B to A is

If in the circuit shown below, the internal resistance of the battery is 1Omega and V_(P) and V_(Q) are the potentials at P and Q respectively, the potential difference between te point P and Q is

The electric potential at point A is 20 V and at B is -40 V . Find the work done by an external and electrostatic force in moving an electron slowly from B to A.

Two points P and Q move in same plane such that the relative acceleration of P with respect to Q is zero. They are moving such that the distance betweent them is decreasing. Pick the correct statement for P and Q to collide.

A current I is passing through a wire having two sections P and O of uniform diameters d and d//2 respectively. If the mean drift velocity of electrons in section P and Q is denoted by v_(P) and v_(Q) respectively, then

DISHA PUBLICATION-ELECTROSTATIC POTENTIAL AND CAPACITANCE-EXERCISE -1: CONCEPT BUILDER
  1. Two small identical metal balls of radius rare at a distance a (a lt l...

    Text Solution

    |

  2. Two small equal point charges of magnitude q are suspended from a comm...

    Text Solution

    |

  3. Two points P and Q are maintained at the potentials of 10V and -4V, re...

    Text Solution

    |

  4. A square of side a charge Q at its centre and charge q at one of the c...

    Text Solution

    |

  5. An alpha particle is acceleration through a potential difference of 10...

    Text Solution

    |

  6. A and B are two points in an electric field . If the work done in carr...

    Text Solution

    |

  7. A conductor carries a certain charge. When it is connected to another ...

    Text Solution

    |

  8. If a unit positive charge is taken from one point to another over an e...

    Text Solution

    |

  9. A ball of mass 1 kg carrying a charge 10^(-8)C moves from a point A at...

    Text Solution

    |

  10. A positive point charge q is carried from a point B to a point A in th...

    Text Solution

    |

  11. There exists a uniform electric field E=4xx10^(5) Vm^(-1) directed alo...

    Text Solution

    |

  12. As shown in fig. a dust particle with mass m=5.0xx10^(-9) kg and charg...

    Text Solution

    |

  13. Two identical thin ring, each of radius R meters, are coaxially placed...

    Text Solution

    |

  14. A parallel plate capacitor is charged to a certain voltage. Now if the...

    Text Solution

    |

  15. A parallel plate capacitor is charged and then isolated. The effect of...

    Text Solution

    |

  16. If in a parallel capacitor, which is connected to a battery we fill in...

    Text Solution

    |

  17. A dielectric slab is inserted between the plates of an isolated charge...

    Text Solution

    |

  18. A cylindrical capacitor has charge Q and length L. If both the charge ...

    Text Solution

    |

  19. To establish an instantaneous displacement current of 2A in the space ...

    Text Solution

    |

  20. Two identical metal plates are given poistive charges Q1 and Q2 (ltQ1)...

    Text Solution

    |