Home
Class 12
PHYSICS
The loop ABCD is moving with velocity 'v...

The loop `ABCD` is moving with velocity `'v'` towards right. The magnetic field is `4T`. The loop is connected to a resistance of `8 Omega`. If steady current of `2A` flows in the loop then value of `'v'` if loop has a resistance of `4 Omega`, is : (Given `AB = 30 cm, AD = 30 cm`)

A

`(50)/(3)m//s`

B

`20m//s`

C

`10 m//s`

D

`(100)/(3)m//s`

Text Solution

Verified by Experts

The correct Answer is:
D
BAD sin `37^(@)v=14xx0.3sin37^(@)`v
`l=(4xx0.3xx0.6v)/(4+8)=2 rArr v=(24xx10)/(4xx0.6xx3)=(100)/(3)m//s`.
Promotional Banner

Topper's Solved these Questions

  • ELECTRIC CHARGE

    BITSAT GUIDE|Exercise All Questions|28 Videos

  • FLUID MECHANICS

    BITSAT GUIDE|Exercise BITSAT Achives|15 Videos

Similar Questions

Explore conceptually related problems

A loop ABCD is moving with velocity v towards the right . The magnetic field is 2 T . Loop is connected to a resistance of 9Omega If the steady current of 2 A flows in the loop, then the value of v , if loop has resistance of 4Omega is ( Given AD = 30 cm)

Magnetic field at the centre of a circular loop with n turns is 0.50 mt. Calculate the value of n if current of 5.3 A flows in the loop and radius of loop is 2 cm.

A semicircle loop PQ of radius 'R' is moved with velocity 'v' in transverse magnetic field as shown in figure . The value of induced emf . Between the ends of loop is :-

The magnetic flux across a loop of resistance 10Omega is given by phi=5t^(2)-4t^(2)+1Wb . How much current is induced in the loop after 0.2 s?

A conducting loop is being pulled with speed v from region I of magnetic field to region II. If resistance of the loop is R, current induced in the loop at the instant shown is

The magnetic field due to a current carrying loop of radius 3 cm at a point on the axis at a distance of 4 cm from the centre is 54 muT . What will be its value at the centre of loop ?

A square loop of side 20 cm and resistance 1 Omega is moved towards right with a constant speed v_0 . The right arm of the loop is in a uniform magnetic field of 5 T. The field is perpendicular to the plane of the loop and is going into it. The loop is connected to a network of resistors each of value 4 Omega. What should be the value of v_0 so that a steady current of 2 mA flows in the loop ?

A square metal wire loop of side 20 cm and resistance 2Omega is moved with a constant velcoity v_(0) in a uniform magnetic field of induction B = 1 Wb//m^(2) as shown in the figure. The magnetic field lines are perpendicular to the plane of the loop. The loop is connected to a network of resistance each of value 5Omega . The resistances of the lead wires BF and AE are negligible. What should be the speed of the loop, so as to have a steady current of 2 mA in the loop? Give the direction of current in the loop.

A rectangular loop of sides 8 cm and 2 cm with a small cut is stationary in a uniform magnetic field directed normal to the loop. The magneic field is reduced form its initial value of 0.3 T at the rate of 0.2 T s^(-1) . If the cut is joined and the loop has a resistance of 1.6 Omega , how much power is dissipated by the loop as heat ?

BITSAT GUIDE-ELECTROMAGNETIC INDUCTION-All Questions
  1. A coil has an area of 0.05m^(2) and has 800 turns . After plac...

    Text Solution

    |

  2. In Fig. a coil of single turn is wound on a sphere of radius r and mas...

    Text Solution

    |

  3. The loop ABCD is moving with velocity 'v' towards right. The magnetic ...

    Text Solution

    |

  4. Calcualte the self-inducatance of the air cored solined of length...

    Text Solution

    |

  5. The inductance per unit length of a double tape line as shown in th...

    Text Solution

    |

  6. What is the mutual inductance of coil and solenid if a has a radiu...

    Text Solution

    |

  7. When the current changes from +2A to -2A in 0.05s, and emf of 8B is in...

    Text Solution

    |

  8. A closed circuit consits of a source of constant and E and a chok...

    Text Solution

    |

  9. Three pure inductors each of 2H are connected as shown in the figure. ...

    Text Solution

    |

  10. The sum and difference of self-inductances of two coils are 13 mH and ...

    Text Solution

    |

  11. In the figure, the steady state current through the inductor will be

    Text Solution

    |

  12. Determine thte valur of time constan for the given circuit

    Text Solution

    |

  13. The time constant for the given circuit is

    Text Solution

    |

  14. With usual notations, the energy dissipation in an ideal inductor is g...

    Text Solution

    |

  15. A non-conducting ring of radius r has charge per unit length lambda. A...

    Text Solution

    |

  16. Figures show a uniform magnetic field B condfirned to ta cylinderical ...

    Text Solution

    |

  17. Find the energy stored in the magnetic field if current of 5A produces...

    Text Solution

    |

  18. The inductance of a coil in which a current of 0.1 A increasing at the...

    Text Solution

    |

  19. Lenz's law of electromagnetic induction corresponds to the

    Text Solution

    |

  20. A toroidal solenoid with an air core has an average radius of 15 cm , ...

    Text Solution

    |