Home
Class 12
PHYSICS
A uniform electric field of magnitude 25...

A uniform electric field of magnitude `250 V// m` is directed in the positive x-direction. `A+12muC` charge moves from the origin to the point `(x, y) = (20.0 cm, 5.0 cm).`
(a) What was the change in the potential energy of this charge?
(b) Through what potential difference did the charge move?

Text Solution

Verified by Experts

The correct Answer is:
B
a. `/_\U=-q(/_\V)`
`=-(12xx10^-6)(50)`
`=-6.0xx10^-4J`
`b.` /_\V=Ed=E(/_\x)`
`=(250)(0.2)`
`=50 V`
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATICS

    DC PANDEY|Exercise Level 1 Subjective|15 Videos

  • ELECTROSTATICS

    DC PANDEY|Exercise SUBJECTIVE_TYPE|6 Videos

  • ELECTROSTATICS

    DC PANDEY|Exercise Level 1 Assertion And Reason|19 Videos

  • ELECTROSTATIC POTENTIAL AND CAPACITORS

    DC PANDEY|Exercise (C) Chapter exercises|50 Videos

  • GRAVITATION

    DC PANDEY|Exercise All Questions|120 Videos

Similar Questions

Explore conceptually related problems

Let there be a uniform electric field "E" existing along the positive X-direction.Assume electric potential to be zero at the origin.Potential at the point x=x_(0) is

An electric dipole is fixed at the origin of coordinates. Its moment is directed in the positive x - direction. A positive charge is moved from the point (r,0) to the point (-r,0) by an external agent. In this process, the work done by the agent is

A charge of 70 A-h (ampere-hours) moves through a potential difference of 25 V. What are (a) the charge in coulombs and (b) the magnitude of the change in the potential energy of the charge?

A charge is moved in an electric field of a fixed charge distribution from point A to another point B slowly. The work done by external agent in doing so is 100J . What is the change in potential energy of the charge as it moves from A to B ? What is the work done by the electric field of the charge distribution as the charge moves from A to B ?

The electric potential at 0.9m from a point charge is +50 V . What is the magnitude and sign of the charge ?

a conducting rod of length L = 30.0 cm movies in a magnetic field vec(B) of magnitude 0.450 T directed into the plane of the figure. The rod moves with speed v = 5.00 m s^(-1) in the direction shown. (a) What is motional emf inuced in the rod ? (b) What is the potential difference between the ends of the rod? ( c) When point, a or b , is at higher potential? (d) When the charges in the rod are in equilibrium, what are the magnitude and direction of the electric field within the rod? (e) When the charges in the rod are in the rod in equilibrium, which point, a or b , has an excess of positive charge?

Two charges of +5nC and -2nC are placed at points (5cm, 0, 0) and (23cm, 0, 0) in a region of space where there is no other external electric field. Calculate potential energy of this charge system.

A uniform electric field E_0 is directed along positive y-driection. Find the change in electric potential energy of a positive test charge q_0 when it is displaced in this field from y_i=a to y_f=2a along the y-axis.

DC PANDEY-ELECTROSTATICS-Level 1 Objective
  1. A point charge q1 = + 2muC is placed at the origin of coordinates. A s...

    Text Solution

    |

  2. A charge Q is spread uniformly in the form of a line charge density la...

    Text Solution

    |

  3. A uniform electric field of magnitude 250 V// m is directed in the pos...

    Text Solution

    |

  4. A small particle has charge -5.00muC and mass 2.00 xx 10-4 kg. It move...

    Text Solution

    |

  5. A plastic rod has been formed into a circle of radius R. It has a posi...

    Text Solution

    |

  6. A point charge q1=+2.40muC is held stationary at the origin. A second...

    Text Solution

    |

  7. A point charge q1 = 4.00 nC is placed at the origin, and a second poin...

    Text Solution

    |

  8. Three point charges, which initially are infinitely far apart, are pla...

    Text Solution

    |

  9. The electric field in a certain region is given by E=(5hati-3hatj)kV//...

    Text Solution

    |

  10. In a certain region of space, the electric field is along +y-direction...

    Text Solution

    |

  11. An electric field of 20 N//C exists along the x-axis in space. Calcula...

    Text Solution

    |

  12. The electric potential existing in space is V(x,y,z)A(xy+yz+zx) (a) ...

    Text Solution

    |

  13. An electric field E = (20hati + 30 hatj) N/C exists in the space. If t...

    Text Solution

    |

  14. In a certain region of space, the electric potential is V (x, y, z) = ...

    Text Solution

    |

  15. A sphere centered at the origin has radius 0.200 m. A-500muC point cha...

    Text Solution

    |

  16. A closed surface encloses a net charge of -3.60 muC. What is the net e...

    Text Solution

    |

  17. The electric field in a region is given by E = 3/5 E0hati +4/5E0j with...

    Text Solution

    |

  18. The electric field in a region is given by E = (E0x)/lhati. Find the c...

    Text Solution

    |

  19. A point charge Q is located on the axis of a disc of radius R at a dis...

    Text Solution

    |

  20. A cube has sides of length L. It is placed with one corner atAthe orig...

    Text Solution

    |