Home
Class 11
PHYSICS
A charge +q is placed at the origin O of...

A charge +q is placed at the origin O of x-y axes as shoen in the figure. The work done in taking a charge Q from A to B along the straight line AB is

A

`((-qQ)/(4pi in_(0))1/a^(2)) sqrt(2)a`

B

zero

C

`((qQ)/(4pi in_(0))1/a^(2)) 1/sqrt(2)a`

D

`((qQ)/(4pi in_(0))1/a^(2)) sqrt(2)a`

Text Solution

Verified by Experts

The correct Answer is:
B
Charge moves `bot^(r)` to the field lines. So the work done will be zero.
Promotional Banner

Topper's Solved these Questions

  • MISCELLANEOUS

    ALLEN|Exercise Exersice-03|7 Videos

  • MISCELLANEOUS

    ALLEN|Exercise ASSERTION-REASON|18 Videos

  • MISCELLANEOUS

    ALLEN|Exercise Part -II Example Some worked out Examples|1 Videos

  • KINEMATICS (MOTION ALONG A STRAIGHT LINE AND MOTION IN A PLANE)

    ALLEN|Exercise BEGINNER S BOX-7|8 Videos

  • PHYSICAL WORLD, UNITS AND DIMENSIONS & ERRORS IN MEASUREMENT

    ALLEN|Exercise EXERCISE-IV|8 Videos

Similar Questions

Explore conceptually related problems

As per this diagram a point charge +q is placed at the origin O . Work done in taking another point charge -Q from the point A(0, a) to another point B(a, 0) along the staight path AB is:

As per this diagram a point charge +q is placed at the origin O . Work done in taking another point charge -Q from the point A(0, a) to another point B(a, 0) along the staight path AB is:

A point charge +q is placed at origin O . The work done in taking another point charge -q from the point A to point B along the circular arc as shown in the figure is .

In the given figure, charge +Q is placed at the centre of a circle. Work done in taking another charge +g from A to B is W_1 and from B to C is W_2. What is the relation between W_1= W_2 .

Charges +q and -q are located at the corners of a cube of side as show in the figure. Find the work done to separate the charges to infinite distance

A point charge q is placed at the origin . How does the electric field due to the charge very with distance r from the origin ?

A charge Q is placed at the centre of the line joining two point charges +q and +q as shown in figure. The ratio of charges Q and q is

Four equal charges Q are placed at the four corners of a square of each side is 'a'. Work done in removing a charge -Q from its centre to infinity is

a. A circle is drawn with center as a charge +q. What is the work done in moving a charge +q from B to C along the circumferebce of the circle ? B In the above question, if the charge +q is first taken from B to A and then from A to C, on which path is the magnitude of work greater?

An infinite line of charge lamda per unit length is placed along the y-axis. The work done in moving a charge q from A(a,0) to B (2a,0) is

ALLEN-MISCELLANEOUS-Exercise-01
  1. The are AB with the centre C and infinitely long wire having linear ch...

    Text Solution

    |

  2. The diagram shows the electric field lines produced by an electrostali...

    Text Solution

    |

  3. A charge +q is placed at the origin O of x-y axes as shoen in the figu...

    Text Solution

    |

  4. Two identical thin rings, each of radius R, are coaxially placed at a...

    Text Solution

    |

  5. Two identical particles of mass m carry a charge Q each. Initially one...

    Text Solution

    |

  6. In a regular polygon of n side, each corner is at a distance r from th...

    Text Solution

    |

  7. An alpha particle of energy 5 MeV is scattered through 180^(@) by a fi...

    Text Solution

    |

  8. In a uniform electric field a charge of 3 C experiences a force of 300...

    Text Solution

    |

  9. Uniform electric field of magnitude 100 Vm^-1 in space is directed alo...

    Text Solution

    |

  10. The equation of an equipotential line in an electric field is y = 2 x...

    Text Solution

    |

  11. In a certain region of space, the potential is given by : V=k[2x^(2)-y...

    Text Solution

    |

  12. (Figure 3.141) shows two equipotential lines in the x plane for an ele...

    Text Solution

    |

  13. The refreactive index of space changes with y, who function is given ...

    Text Solution

    |

  14. Three equal charges are placed at the corners of an equilateral triang...

    Text Solution

    |

  15. A non-conducting ring of radius 0.5 m carries a total charge of 1.11xx...

    Text Solution

    |

  16. Two point charges +q and -q are held fixed at (-a,0) and (a,0) respect...

    Text Solution

    |

  17. The work done in ritating an electric dipole of dipole moment P in an ...

    Text Solution

    |

  18. Which one of the following pattern of electric line of force can't pos...

    Text Solution

    |

  19. A sphere of radius R and charge Q is placed inside an imaginary sphere...

    Text Solution

    |

  20. Due to a charge inside a cube the electric field is E(x)=600 x^(1//2),...

    Text Solution

    |