Home
Class 12
PHYSICS
A long conductin gwire AH is moved over ...

A long conductin gwire AH is moved over a conducitn triangular wire CDE with a constant velocity v in a uniform magnetic field B directed into the paper. Resistance per unit length of each wire is `rho`. Then

A

(a) a constant clockwise induced will flow in the closed loop

B

(b) an increasing anticlockwise induced current will flow in the closed loop

C

(c ) a decreasing anticlockwise induced current will flow in the closed loop

D

(d) an constant anticlockwise induced current will flow in the closed loop

Text Solution

Verified by Experts

The correct Answer is:
D
(d) Magnetic flux in `ox` direction through the coil is increasing. Therefore, induced current will produce magnetic field in `o.` direction. Thus, the current in the loop is anticlockwise. Magnitude of induced current at any instant of time is
`I = (e)/(R) = (Bv(FG))/(rho(FG + GD + DF))`
When the wire `AH` moves downwards `FG, GD and DF` all increasing in the same ratio. Therfore, `i` is constant.
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    CENGAGE PHYSICS ENGLISH|Exercise Exercises Multiple Correct|23 Videos

  • ELECTROMAGNETIC INDUCTION

    CENGAGE PHYSICS ENGLISH|Exercise Exercises Asserton - Reasoning|8 Videos

  • ELECTROMAGNETIC INDUCTION

    CENGAGE PHYSICS ENGLISH|Exercise Exercises Subjective|13 Videos

  • ELECTRICAL MEASURING INSTRUMENTS

    CENGAGE PHYSICS ENGLISH|Exercise M.C.Q|2 Videos

  • ELECTRON,PHONTS,PHOTOELECTRIC EFFECT & X-RAYS

    CENGAGE PHYSICS ENGLISH|Exercise dpp 3.3|15 Videos

Similar Questions

Explore conceptually related problems

A long conducting wire AH is moved over a conducting triangular wire CDE with a constant velocity v in a uniform magnetic field vec(B) directed into the plane of the paper. Resistance per unit length of each wire is rho . Then

The loop shown moves with a velocity v in a uniform magnetic field of magnitude B , directed into the paper. The potential differene between point P and Q is e. Then

A small conducting rod of length l, moves with a uniform velocity v in a uniform magnetic field B as shown in fig __

An equilateral triangular loop ADC having some resistance is pulled with a constant velocity v out of a uniform magnetic field directed in to the paper. At time t = 0 , side DC of the loop at is at edge of the magnetic field. The induced current (i) versus time (t) graph will be as

A neutral metal bare moves at a constant velocity v to the right through a region of uniform magnetic field directed out the page, as shown. Therefore,

A copper wire bent in the shape of a semicircle of radius r translates in its plane with a constant velocity v. A uniform magnetic field B exists in the direction perpendicular to the plane of the wire. Find the emf induced between the ends of the wire if (a) the velocity is perpendicular ot the diameter joining free ends, (b) the velocity is parallel to this diameter.

A conducting wire MN moves with velocity V_0 along +X-axis in a uniform magnetic field (bar B= -B_0 hat k) as shown in the diagram then

The radius of circular loop is 'a'. Magnetic field is incerasing at a constant rate a. Magnetic field of a confined with the axis of the loop. Resistance per unit length of the wire of loop is rho . Choose the correct option(s):

A loop ABCD containing two resistors as shown in figure is placed in a uniform magnetic field B directed outward to the plane of page. Asliding conductor EF of length I and of negligible resistance moves to the right with a uniform velocity v as shown in Fig. Determine the current in each branch.

In the circuit shown in Fig. A conducting wire HE is moved with a constant speed v towards left. The complete circuit is placed in a uniform magnetic field vec(B) perpendicular to the plane of circuit inwards. The current in HKDE is

CENGAGE PHYSICS ENGLISH-ELECTROMAGNETIC INDUCTION-Exercises Single Correct
  1. The radius of the circular conducting loo[ shown in the figure is R. M...

    Text Solution

    |

  2. A conducting rod PQ of length L = 1.0 m is moving with a uniform speed...

    Text Solution

    |

  3. A long conductin gwire AH is moved over a conducitn triangular wire CD...

    Text Solution

    |

  4. A square coil ACDE with its plane vertically is released from rest in ...

    Text Solution

    |

  5. A conducting wire frame is placed is placed in a magnetic field which ...

    Text Solution

    |

  6. An equilateral triangular loop ADC having some resistance is pulled wi...

    Text Solution

    |

  7. Figure show a square loop of side 0.5 m and resistance 10Omega. The ma...

    Text Solution

    |

  8. A rectangular loop of wire with dimensions shown in figure is coplanar...

    Text Solution

    |

  9. The four wire loops shown figure have vertical edge lengths of either ...

    Text Solution

    |

  10. A rod lies across frictionless rails in a uniform magnetic field vec(B...

    Text Solution

    |

  11. The current through the coil in figure (i) varies as shown in figure (...

    Text Solution

    |

  12. An electron moves on a straight line path XY the path show . The abcd ...

    Text Solution

    |

  13. In fig. there exists a uniform magnetic field B into the plane of pap...

    Text Solution

    |

  14. In figure, there is conducting ring having resistance R placed in the...

    Text Solution

    |

  15. In the space shown a non-uniform magnetic field vec(B) = B(0)(1+x)(-ha...

    Text Solution

    |

  16. There is a uniform magnetic field B in a circular region of radius R a...

    Text Solution

    |

  17. A gold rod of length l is accelerated in the horizontal direction wit...

    Text Solution

    |

  18. A square loop of side as and a straight long wire are placed in the sa...

    Text Solution

    |

  19. A wooden stick of length 3l is rotated about an end with constant angu...

    Text Solution

    |

  20. PQ is an infinite current carrying conductor. AB and CD are smooth con...

    Text Solution

    |