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

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

`Bysqrt((2a)k)`

B

`Bysqrt((4a)/(k))`

C

`Bysqrt((8a)/(k))`

D

`Bysqrt((a)/(k))`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • NTA JEE MOCK TEST 53

    NTA MOCK TESTS|Exercise PHYSICS|25 Videos
  • NTA JEE MOCK TEST 55

    NTA MOCK TESTS|Exercise PHYSICS|25 Videos

Similar Questions

Explore conceptually related problems

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

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 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 conducing circular loop is placed in a uniform magnetic field of 0.02 T, woth its plane perpendicular to the field. If the redius of the loop starts shrinking at a constant rate of 1.0 mm//s , then find the emf induced in the loop, at the instant when radius is 4 cm.

A wire loop enclosing as semicircle of radius R is located on the boudary of uniform magnetic field B . At the moment t=0 , the loop is set into rotation with a costant angular acceleration alpha about an axis O coinciding with a line of vector B on the boundary. Find the emf induced in the loop as a function of time. Draw the approximate plot of this function.The arrow in the figure shows the emf direction taken to be positive.

The graph gives the magnitude B(t) of a uniform magnetic field that exists throughout a conducting loop, with the direction of the field perpendicular to the plane of the loop. Rank the five regions of the graph according to the magnitude of the emf induced in the loop, greatest first.

A conducting circular loop is placed is a uniform magnetic field B =0.20 T with its plane perpendicualr to the field . Somehow, the radius of the loop starts shrinking at a constant rate of 1.0 mm s^(-1). Find the induced emf in the loop at an instant when the radius is 2 cm.

NTA MOCK TESTS-NTA JEE MOCK TEST 54-PHYSICS
  1. A cone made of insulating material has a total charge Q spread uniform...

    Text Solution

    |

  2. Rain, driven by the wind, falls on a railway compartment with a veloci...

    Text Solution

    |

  3. All surfaces shown in figure are smooth system is released with the sp...

    Text Solution

    |

  4. Half-life of radioactive sample, when activity of material initially w...

    Text Solution

    |

  5. A wire bent as a parabola y=kx^(2) is located in a uniform magnetic fi...

    Text Solution

    |

  6. The radiation emitted when an electron jumps from n = 3 to n = 2 orbi...

    Text Solution

    |

  7. The U-tube shown has uniform cross-section A liquid is filled in the t...

    Text Solution

    |

  8. A ray of light is incident on a surface of glass slab at an angle 45^@...

    Text Solution

    |

  9. A small particle of mass m and its retaining cord is spinning with ang...

    Text Solution

    |

  10. The carrier frequency generated by a tank circuit containing 1 nF capa...

    Text Solution

    |

  11. A ideal gas (gamma=1.5) is expanded adiabatically. How many times has ...

    Text Solution

    |

  12. The quantities A and B are related by the relation A//B = m, where m ...

    Text Solution

    |

  13. A point sources S emitting light of wavelength 600nm is placed at a ve...

    Text Solution

    |

  14. A string of mass per unit length mu is clamped at both ends such that ...

    Text Solution

    |

  15. One end of a light spring of natural length d and spring constant k is...

    Text Solution

    |

  16. Which state of the triply ionized Beryllium (Be^(3+)) has the same orb...

    Text Solution

    |

  17. IN a rotor, a hollow vertical cylindrical structure rotates about its ...

    Text Solution

    |

  18. The distance advanced by the screw of a screw gauge is 2 mm in 4 rotat...

    Text Solution

    |

  19. The deflection in galvanometer falls to ((1)/(4))^(th) when it is shun...

    Text Solution

    |

  20. An object of mass 8 kg starts to move from rest under the action of a ...

    Text Solution

    |