Home
Class 12
PHYSICS
Consider the situation shown in . The wi...

Consider the situation shown in . The wire AB is slid on the fixed rails rails with a constant velocity. If the wire AB is replaced by a semicircular wire, the magnitude of the induced current will

A

increase

B

remain the same

C

decreaes

D

increase of decrease depending on whether the semicircular bulges towards the resistance or away from it

Text Solution

Verified by Experts

The correct Answer is:
B
Effective length and hence emf remaining same.
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    CP SINGH|Exercise EXERCISES|141 Videos

  • CURRENT ELECTRICITY

    CP SINGH|Exercise Exercise|137 Videos

  • ELECTROMAGNETIC WAVES

    CP SINGH|Exercise EXERCISES|21 Videos

Similar Questions

Explore conceptually related problems

Consider the situation shown in the figure. The wire Ab is sliding on the fixed rails with a constant velocity. If the wire AB is replaced by semicircular wire, the magnitude of the induced current will

Consider the situation shown in figure. The straight wire is fixed but the loop can move under magnetic force. The loop will

Consider circuit as shown in figure. The current through wire AB is

Figure shows a wire ab of length L and resistance R which can slide on a smooth pair of rails. I_(g) is current generator which supplies a constant current i in the circuit. If the wire ab slide at a speed v towards right, find the potential difference below a and b (b) The current generator I_(g) show in the figure sends a constant current i through the circiut. The wire ab has a length L and mass m and can slide on the smooth horizontal rails connect to I_(g) . The entire system lies in a vertical magnetic field B . Find the velocity of the wire as a function of time. (c) The system containing the rails and the wire of the previous part is kept vertically in a uniform horizontal magnetic field B that is perpendicular to the plane of the rails (figure). If is found that the wire stays in equilibrium. If th ewire ab is replaced by another wire of double its mass, how long will lit take in falling through a distance equal to its length? The current generator I_(g) shown in figure sends a constant current i through the circuit. The wire cd is fixed and wire ab is made to slide on the smooth, thick rails with a constant velocity v toward right. Each of these wires has resistance r . Find the current through the wire cd .

Consider the situation shown in figure.The wire CD has a negligible resistance and is made to slide on the three rails with a constant speed of 50 cm//s .Find the current in the 10 Omega resistor when the switch S is thrown to (a) the middle rail (b)bottom rails.(Neglect resistance of rails)

Consider the situation shown in figure. If the current I in the long straight wire xy is increased at a steady rate the induced current in loop A and B will be

Consider the situation shown in the figure. The wire PQ has mass m , resistance r and can slide 0n the smooth, horizontal parallel rails separated by a distance l . The resistance of the rais is negiligible. A uniform magnetic field B exists in the reactangular region and a resistance R connects the rail outside the field region. At t=0 , the wire PQ is pushed toward right with a speed v_(0) . Find (a) the current in the loop at an instant when the speed of the wire PQ is v (b) the acceleration of the wire as this instant (c) the velocity v as a function of x (d) the maximum distance the wire will move (e) the velocity as a function of time

The long straight wire in figure (a) carries a constant current i . A metal bar of length i is moving at constant velocity v as shown in figure. Point a is a distance d from the wire. (a) Calculate the emf induced in the bar. (b) Which point a or b is at higher potential? (c) If the bar is replaced by a rectangular wire loop of resistance R , what is the magnitude of current induced in the loop?

Figure shows a wire ab of length l which can slide on a U-shaped rail of negligible resistance. The resistance of the wire is R. The wire is pulled to the right with a constant speed v. Draw an equivalent circuit diagram representing the induced emf by a battery. Find the current in the wire.

In the circuit shown in the figure , if a conducting wire is conneted between point A and B , thent the current in the wire AB will

CP SINGH-ELECTROMAGNETIC INDUCTION-EXERCISES
  1. A rectangular frame of wire abcd has dimensions 1mxx 0.5m and a total ...

    Text Solution

    |

  2. shows a conducting loop being pulled out of a magnetic field with a sp...

    Text Solution

    |

  3. Consider the situation shown in . The wire AB is slid on the fixed rai...

    Text Solution

    |

  4. A vertical ring of radius r and resistance on R falls vertically. It i...

    Text Solution

    |

  5. A vertical conduction ring of radius R falls vertically in a horizonta...

    Text Solution

    |

  6. A thin semicircular conducting ring of radius R is falling with its pl...

    Text Solution

    |

  7. Two conducting rings of radii r and 2r move in apposite directions wit...

    Text Solution

    |

  8. The conductor ABCDE has the shape shown. It is lies in the YZ plane, w...

    Text Solution

    |

  9. shows a straight, long wire carrying a current I and a rod of length l...

    Text Solution

    |

  10. The magnetic field in a region is given by vec B = veck (B0)/(L) y whe...

    Text Solution

    |

  11. Consider the following statements: (a)An emf can be induced by moving ...

    Text Solution

    |

  12. A conducting loop is placed in a uniform magnetic field with its plane...

    Text Solution

    |

  13. A magnet is moving towards a coil along its axis and the emf induced i...

    Text Solution

    |

  14. As shown in the figure, a magnetic is moved with a a fast speed toward...

    Text Solution

    |

  15. A metal rod length l rotates about on end with a uniform angular velo...

    Text Solution

    |

  16. if rod is rotated about an axis passing through its mid-point , the po...

    Text Solution

    |

  17. A metal conductor of length 1m rotates vertically about one of its end...

    Text Solution

    |

  18. A metal rod of resistance R is fixed along a diameter o fa conducting ...

    Text Solution

    |

  19. A conducting disc of radius r spins about its axis an angular velocity...

    Text Solution

    |

  20. Three indential rings move with same speed on a horizontal magnetic fi...

    Text Solution

    |