Home
Class 11
PHYSICS
At distance r from a point charge the ra...

At distance `r` from a point charge the ratio `(U)/(V^(2))` where `U` is energy density and V is potential) is best reprsented by

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
B
`U=1/2 epsilon_(0)E^(2)=1/2(epsilon_(0)K^(2)Q^(2))/(r^(4))rArr V=(KQ)/rrArr U/(V^(2)) =(1/2 epsilon_(0)K^(2)(Q^(2)))/((K^(2)Q^(2))/(r^(2)))=1/2 (epsilon_(0))/(r^(2))`
Because `U/(v^(2)) prop 1/(r^(2))rArr ` so the correct option is B.
Promotional Banner

Topper's Solved these Questions

  • PART TEST 4

    RESONANCE ENGLISH|Exercise Exercise|30 Videos

  • PART TEST 6

    RESONANCE ENGLISH|Exercise Exercise|30 Videos

Similar Questions

Explore conceptually related problems

At distance 'r' from a point charge, the ratio (U)/(V^(2)) (where 'U' is energy density and 'V' is potential) is best respresented by :

At a certain distance from a point charge, the field intensity is 500 V/m and the potential is -3000 V . The distance to the charge and the magnitude of the charge respectively are

At a certain distance from a point charge, the field intensity is 500 V//m and the potential is -3000 V . The distance to the charge and the magnitude of the charge respectively are

At a certain distance from a point charge, the field intensity is 500 V//m and the potentil is -3000 V . The distance to the charge and the magnitude of the charge respectively are

The energy density u/V of an ideal gas is related to its pressure P as

Plot a graph comparing the variation of potential ‘V’ and electric field ‘E’ due to a point charge ‘Q’ as a function of distance r from point charge (ii) Find the ratio of the potential differences that must be applied across the parallel and the series combination of two identical capacitors so that the energy stored, in the two cases, becomes the same.

A point moves in a straight line under the retardation av^(2) , where 'a' is a positive constant and v is speed. If the initial speed is u , the distance covered in 't' seconds is :

In a regular polygon of n sides, each corner is at a distance r from the centre. Identical charges are placed at (n-1) corners. At the centre, the intensity is E and the potential is V . The ratio V//E has magnitude

In a regular polygon of n sides, each corner is at a distance r from the centre. Identical charges are placed at (n-1) corners. At the centre, the intensity is E and the potential is V . The ratio V//E has magnitude

A positive charge is released from rest at a distance r_(0) from a positive line charge with uniform density . The speed (v) of the point charge , as a function of instantaneous distance r from line charge, is proportional to:

RESONANCE ENGLISH-PART TEST 5-Exercise
  1. A uniformly charged non-conducting spherical shell is given +q charge ...

    Text Solution

    |

  2. Find out the potential of the junction S (in volts) if all the dark wi...

    Text Solution

    |

  3. In the figure shown R = 100 Omega, L = (2)/(pi) H and C = (8)/(pi) mu...

    Text Solution

    |

  4. A uniform field is exists in the region directed away from the page. A...

    Text Solution

    |

  5. When the number of turns in a solenoid are doubled without any change ...

    Text Solution

    |

  6. The potential difference across8Omega resistance is 48V as shown in t...

    Text Solution

    |

  7. In the given circuit, in steady state we may say: (capacitor are initi...

    Text Solution

    |

  8. Two circular rings of identical radii and resistance of 36 Omega each ...

    Text Solution

    |

  9. At distance r from a point charge the ratio (U)/(V^(2)) where U is ene...

    Text Solution

    |

  10. A graph between current and time during charging of a capacitor by a b...

    Text Solution

    |

  11. An electron passes between two parallel plate of a capacitor as shown ...

    Text Solution

    |

  12. Three distinct current carrying wires intersect a finite rectangular p...

    Text Solution

    |

  13. An alternating EMF of frequency (1)/(2pi sqrt(LC)) is applied to a ser...

    Text Solution

    |

  14. In an AC circuit , the power factor

    Text Solution

    |

  15. The instantaneous potential difference between points. A. 8 sin (5...

    Text Solution

    |

  16. A parallel plate capacitor is charged and the charging battery is then...

    Text Solution

    |

  17. The linear charge density on a ring of radius R is lambda=lambda0 sin ...

    Text Solution

    |

  18. Two small spheres of masses M(1) and M(2) are suspended by weightless ...

    Text Solution

    |

  19. Assertion:- A point charge q is placed near an arbitary shaped solid c...

    Text Solution

    |

  20. Statement 1: The circuits containing capacitor be handled cautiously e...

    Text Solution

    |