Home
Class 12
PHYSICS
In a region, the intensity of an electri...

In a region, the intensity of an electric field is given by `vecE=2hati+3hatj+hatk` in `NC^(-1)`. The electric flux through a surface `vecS=10hatim^(2)` in the region is

A

`5Nm^(2)C^(-1)`

B

`10Nm^(2)C^(-1)`

C

`15Nm^(2)C^(-1)`

D

`20Nm^(2)C^(-1)`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • QUESTION PAPER 2012

    WB JEE PREVIOUS YEAR PAPER|Exercise Subject: Physics|38 Videos
  • QUESTION PAPER 2011

    WB JEE PREVIOUS YEAR PAPER|Exercise PHYSICS|39 Videos
  • QUESTION PAPER 2013

    WB JEE PREVIOUS YEAR PAPER|Exercise Category-III|5 Videos

Similar Questions

Explore conceptually related problems

An electric is expressed as vecE=20 hatiV.m^(-1) . Find the electric flux passing through a surface of area 0.25m^(2) normal to the x-axis.

An electric field is expressed as vec E = ( 5 hati + 3 hatj + 2 hatk ) unit. Find out the electric flux across an area of 200 unit on the yz - plane in the field.

The dipole moment of an electric dipole is given by vecp=10^(-7)(5hati+hatj-2hatk)cm . The dipole is kept in an electric field of intensity, vecE=10^(7)(hati+hatj+hatk)V.m^(-1) . Obtain the magnitude of torque acting on the dipole.

An electron enters an electric field having intensity vecE=3hati+6hatj+2hatkV.m^(-1) and a magnetic field having induction vecB=2hati+3hatjT with a velocity vecv=2hati+3hatjm.s^(-1) . The magnitude of the force acting on the electron is (Given e=-1.6xx10^(-19)C )

In vacuum (i) find out the electric flux across an area vec S = 10 hatj placed in an electric field vec E = 2 hati + 4 hatj + 7 hatk , (ii) How many electric charges are to be placed at a point such that 4400 number of electric lines of forces with emerge from that point ? (iii) What will be the electric flux through any one of the faces of a cube of side 10 cm if a charge of 1 esu is placed at the centre of the cube ?

The electric potential in a region is represented as, v=2x+3y-z The electric field strength is

An electric field of intensity "200 N.C"^(-1) is acting along x - axis. What will be the electric flux passing through a square area in yz - plane of side 20 cm?

If the position vectors of two given points A and B be 4hati+hatj+2hatk and 2hati-5hatj-hatk respectively, then a unit vector in the direction of vec(AB) is -

WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2012-Subject: Physics
  1. If the velocity of light in vacuum is 3xx10^(8)ms^(-1), the time taken...

    Text Solution

    |

  2. A charge +q is placed at the origin of X-Y axes as shown in the figure...

    Text Solution

    |

  3. What current will flow through the 2 KOmega resistor in the circuit sh...

    Text Solution

    |

  4. In a region, the intensity of an electric field is given by vecE=2hati...

    Text Solution

    |

  5. The dimension of angular momentum is

    Text Solution

    |

  6. If vecA=vecB+vecC and vecA,vecB,vecC have scalar magnitudes of 5, 4, 3...

    Text Solution

    |

  7. A particle is travelling along a straight line OX. The distance x (in ...

    Text Solution

    |

  8. A particle is projected from the ground with a kinetic energy E at an ...

    Text Solution

    |

  9. A bullet on penetrating 30 cm into its target loses its velocity by 50...

    Text Solution

    |

  10. When a spring is stretched by 10 cm, the potential energy stored is E....

    Text Solution

    |

  11. Average distance of the Earth from the Sun is L(1). If one year of the...

    Text Solution

    |

  12. A spherical ball A of mass 4 kg, moving along a straight line strikes ...

    Text Solution

    |

  13. When a certain metal surface is illuminated with light of frequency v,...

    Text Solution

    |

  14. Three blocks of mass 4 kg, 2 kg, 1 kg respectively are in contact on a...

    Text Solution

    |

  15. Let L be the length and d be the diameter of cross section of a wire. ...

    Text Solution

    |

  16. An object placed in front of a concave mirror at a distance of x cm fr...

    Text Solution

    |

  17. 22320 cal of heat is supplied to 100 g of ice at 0^(@)C. If the latent...

    Text Solution

    |

  18. A progressive wave moving along x-axis is represented by y=Asin[(2pi)/...

    Text Solution

    |

  19. Two radioactive substances A and B have decay constants 5lamda and lam...

    Text Solution

    |

  20. A magnetic needle is placed in a uniform magnetic field and is aligned...

    Text Solution

    |