Home
Class 12
PHYSICS
A wire bent as a parabola y=ax^(2) is lo...

A wire bent as a parabola `y=ax^(2)` is located in a uniformed magnetic field of induaction `B` , the vector `B` being perpendicular to the plane `x-y` . At moment `t=0` a connector starts sliding translationwise from the parabola apex with a constant acceleration `omega` . Find the emf of electromagnetic induction in the loop thus formed as a function of `y`

Text Solution

Verified by Experts

The correct Answer is:
A, B
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    RESONANCE|Exercise Exercis-1 PART 2|51 Videos

  • ELECTROMAGNETIC INDUCTION

    RESONANCE|Exercise Exercis-2 PART 1|15 Videos

  • ELECTROMAGNETIC INDUCTION

    RESONANCE|Exercise Problem|12 Videos

  • ELECTRODYNAMICS

    RESONANCE|Exercise Advanced level problems|31 Videos

  • ELECTROSTATICS

    RESONANCE|Exercise HLP|39 Videos

Similar Questions

Explore conceptually related problems

A wire bent as a parabola y=kx^(2) is located in a uniform magnetic field of induction B, the vector B being perpendicular to the plane xy. At t=0 , the sliding wire starts sliding from the vertex O with a constant acceleration a linearly as shown in Fig. Find the emf induced in the loop -

A wire loop enclosing a semi-circle of radius a=2cm is located on the boundary of a uniform magnetic field of induction B=1T (figure).At the moment t=0 the loop is set into rotation with a constant angular acceleration beta=2 rad//sec^(2) about an axis O coinciding with a line of vector B on the boundary.The emf induced in the loop as a function of time t is [x xx10^(-4)(-1)^(n)xxt]V , where n=1,2,... is the number of the half-revolution taht the loop performs at the given moment t .Find the value of x .(The arrow in the figure shows the emf direction taken to be positive, at t=0 loop was completely outside)

A connector AB can slide without frictiion along a II -shaped conductor located in a horizontal plane (Fig). The connector has a length l , mass m and resistance R . The whole system is located in a unifrom magnetic field of induction B directed vertically. At the moment t = 0 a constant horizontal force F starts acting on the connector shifting it translationwise to the right. Find how th e velocity o fhte connector varies with time t . The inductance of the loop and the resistance of the II-shaped conductor conductor are assumed to be negligible

A wire is bent in the form of a V shape and placed in a horizontal plane.There exists a uniform magnetic field B perpendicular to the plane of the wire. A uniform conducting rod starts sliding over the V shaped wire with a constant speed v as shown in the figure. If the wire no resistance, the current in rod wil

A pi shaped metal frame is located in a uniform magnetic field perpendicular to the plane of the conductor and varying with time at the rate (dB//dt)=0.I0T//sec . A conducting connector starts moving with an acceleration a=I0cm//sec^(2) along the parallel bars of the frame. The lenght o0f the connector is equal to l=20cm . Find the emf induced in the loop t=2sec after the beginnig of the motion, if at the moment t=0 the loop area and the magnetic induction are equal to zero. The inductance of the loop is to be neglected.

A rectangular loop with a sliding conductor of length l is located in a uniform magnetic field perpendicular to the plane of loop. The magnetic induction perpendicular to the plane of loop Is equal to B . The part ad and be has electric resistance R_1 and R_2 , respectively. The conductor starts moving with constant acceleration a_0 , at time t = 0 . Neglecting the self-inductance of the loop and resistance of conductor. Find (a) the current through the conductor during its motion. (b) the polarity of abcd terminal. (c) external force required to move the conductor with the given acceleration.

A copper connector of mass m slides down two smooth cooper bars, set at an angle alpha to the horizontal due to gravity (Fig). At the top the bars is equal to l . The system is located in a unifrom magnetic field of induction B , perpendicular to the plane in which the connector slides. The resistances of the bars, the connector and the sliding contacts, as well as the self-inductance of the loop, are assumed to be negligible. Find the steady-state velocity of the connector.

A rectangular loop of length l and breadth b is situated in a uniform magnetic field of induction B with its plane perpendicular to the field as shown in the figure . Calculate the rate of change of magnetic flux and the induced emf if the loop is rotated with constant angular velocity omega (a) about an axis passing through the centre and perpendicular to the loop. (b) about an axis passing through the centre parallel to the breadth through angle 180^(@) .

RESONANCE-ELECTROMAGNETIC INDUCTION-Exercis-1
  1. The two rails of a railway track, insulataed form each other and from...

    Text Solution

    |

  2. A circular copper ring of raidus r translates in its plane with a cons...

    Text Solution

    |

  3. A wire bent as a parabola y=ax^(2) is located in a uniformed magnetic ...

    Text Solution

    |

  4. A square frame of wire abcd of side 1 m has a total resistance of 4 Om...

    Text Solution

    |

  5. Consider the situation shown in figure.The wire CD has a negligible re...

    Text Solution

    |

  6. Figure showns a smooth pair of thick metallic rails connected across a...

    Text Solution

    |

  7. Figure shows a wire of resistance R sliding on two parallel, conductin...

    Text Solution

    |

  8. A long U-shaped wire of width l placed in a perpendicular uniform and ...

    Text Solution

    |

  9. Consider the situation of the pervious problem. (a) Calculate the forc...

    Text Solution

    |

  10. A wire of mass m and length l can slide freely on a pair of fixed, smo...

    Text Solution

    |

  11. Figure showns a fixed square frame of wire having a total resistance r...

    Text Solution

    |

  12. The magnetic field in a region is given by vecB=B(0)/Lxhatk where L is...

    Text Solution

    |

  13. A straight wire with a resistance of r per unit length is bent to form...

    Text Solution

    |

  14. A metal rod of length 15xx10^(-2)m rotates about an axis passing throu...

    Text Solution

    |

  15. In the figure there are two identical conducting rods each of length a...

    Text Solution

    |

  16. A bicycle is resting on its stand in the east-west direction and the r...

    Text Solution

    |

  17. A simple pendulum with a bob of mass m and a conducting wire of length...

    Text Solution

    |

  18. A conducting disc of radius R is rolling without sliding on a horizont...

    Text Solution

    |

  19. A closed coil having 50 turns is rotated in a uniform magnetic field B...

    Text Solution

    |

  20. A circular loop of radius 1m is placed in a varying magnetic field giv...

    Text Solution

    |