Home
Class 11
PHYSICS
A charges cork of mass m suspended by a ...

A charges cork of mass m suspended by a light stright is placed in uniform electric field strength `E=(hat(i)+hat(j))xx10^(5) NC^(-1)` as shown in the figure. If in equilibrium position tension in the string is `(2mg)/((1+sqrt(3)))` then angle `'alpha'` with the vertical is:

A

`60^(@)`

B

`30^(@)`

C

`45^(@)`

D

`18^(@)`

Text Solution

Verified by Experts

The correct Answer is:
A, B
`T sin alpha=qE cos 45^(@)` and `T cos alpha+qE sin 45^(@)=mg`
Promotional Banner

Topper's Solved these Questions

  • MISCELLANEOUS

    ALLEN|Exercise Exercise-03|1 Videos

  • MISCELLANEOUS

    ALLEN|Exercise Exercise-04|1 Videos

  • MISCELLANEOUS

    ALLEN|Exercise Exersice -05(B)|20 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

A charged cork ball of mass m is suspended on a light sting in the presence of a uniform electric field as shown in fig. When E=(A hat i+B hat j)NC^(-1) , Where A and B positive numbers, the ball is in equilibirum at theta . Find (a) the charge on the ball and (b) the tension in the string.

A charged cork ball of mass m = 16 g is suspended from a light string in the presence of a uniform electric field as shown in the figure. When E=(1/2hati+2hatj)N//C , the ball is in equiligrium at the angle of 37^@ . find W if The tension in the string is Wxx10^(-2)N.

A mass m carrying a charge q si suspended form a string and placed in a uniform horizontal electric field of intensity E .The angel made by the string with the vertical in the equilibrium position is

A charged cork ball of mass m = 16 g is suspended from a light string in the presence of a uniform electric field as shown in the figure. When E=(1/2hati+2hatj)N//C , the ball is in equiligrium at the angle of 37^@ . find W if The charge on the ball is Wxx10^(-2)C.

An electric dipole moment vec P = ( 2. 0 hat I + 3 . 0 hat j) mu C . M is placed in a usifrom electric field vec E = (3 hat I + 2 . 0hat k ) xx 10^5 N C^(-1) .

A charged particle of mass 5 xx 10^(-5) kg is held stationary in space by placing it in an electric field of strength 10^(7) NC^(-1) directed vertically downwards. The charge on the particle is

An electric field vec(E)=(10 hat(i) + 20 hat(j)) N//C exists in the space. If the potential at the origin is taken to be zero, find the potential at (3m, 3m).

A sphere of mass "50gm" is suspended by a string in an electric field of intensity 5NC^(1) acting vertically upward.If the tension in the string is "520 millinewton,the charge on the sphere is "( g=10ms^(-2)) ]

ALLEN-MISCELLANEOUS-Exercise-02
  1. The vector (vec(a)+3vec(b)) is perpendicular to (7 vec(a)-5vec(b)) and...

    Text Solution

    |

  2. Forces proportional to AB , BC and 2 CA act along the slides of a tria...

    Text Solution

    |

  3. A charges cork of mass m suspended by a light stright is placed in uni...

    Text Solution

    |

  4. A charged particle having some mass is resting in equilibrium at a hei...

    Text Solution

    |

  5. The charge per unit length of the four quadrant of the ring is 2 lambd...

    Text Solution

    |

  6. The figure shows a nonconducting ring which has positive and negative ...

    Text Solution

    |

  7. A circular ring carries a uniformly distributed positive charge .The e...

    Text Solution

    |

  8. Find the force experienced by a semicircular rod having a charge q as ...

    Text Solution

    |

  9. Which of the following is true for the figure showing electric lines o...

    Text Solution

    |

  10. An electric charge 10^(-8) C is placed at the point (4m, 7m, 2m). At t...

    Text Solution

    |

  11. Two point charges Q and - Q //4 are separated by a distance X. Then ...

    Text Solution

    |

  12. Two positively charged particles X and Y are initially far away from ...

    Text Solution

    |

  13. Tow particles X and Y, of equal mass and with unequal positive charge...

    Text Solution

    |

  14. In a uniform electric field, the potential is 10V at the origin of co...

    Text Solution

    |

  15. The potential as a function of x is plotted in figure. Which of the fo...

    Text Solution

    |

  16. Four charges of 1mu C, 2mu C, 3mu C and -6 mu C are placed one at each...

    Text Solution

    |

  17. Potential at a point A is 3 volt and at a point B is 7 V, an electro...

    Text Solution

    |

  18. A particle of charge 1 mu C & mass 1 mg moving with a velocity of 4...

    Text Solution

    |

  19. A particle of mass m and charge q is thrown in a region where uniform ...

    Text Solution

    |

  20. In space of horizontal EF (E = (mg)//q) exist as shown in figure and a...

    Text Solution

    |