Home
Class 12
PHYSICS
The magnetic flux (phi) linked with the ...

The magnetic flux `(phi)` linked with the coil depends on time `t` as `phi=at^(n)`, where `a` and `n` are constants. The emf induced in the coil is `e`

A

if `0lt n lt1,e=0`

B

If `0lt nlt1, e!=0` and `|e|` decreases with time

C

If `n=1,e` is constant

D

If `ngt1,|e|` increases with time

Text Solution

AI Generated Solution

To solve the problem, we need to analyze the given magnetic flux and its relationship with the induced electromotive force (emf) in the coil. ### Step-by-Step Solution: 1. **Given Information**: The magnetic flux linked with the coil is given by: \[ \phi = a t^n ...
Promotional Banner

Topper's Solved these Questions

  • TEST PAPERS

    RESONANCE ENGLISH|Exercise PART - II PHYSICS|106 Videos
  • SIMPLE HARMONIC MOTION

    RESONANCE ENGLISH|Exercise Advanced Level Problems|13 Videos
  • TEST SERIES

    RESONANCE ENGLISH|Exercise PHYSICS|130 Videos

Similar Questions

Explore conceptually related problems

The magnetic flux phi linked with a conducting coil depends on time as phi = 4t^(n) + 6 , where n is positive constant. The induced emf in the coil is e

The magnetic flux linked with a coil is phi and the emf induced in it is e .

The magnetic flux linked with a coil (in Wb) is given by the equation phi = 5t^2 + 3t +16 . The magnetic of induced emf in the coil at fourth second will be

The magnetic flux linked with a coil, in webers is given by the equation phi=3t^(2)+4t+9 . Then, the magnitude of induced emf at t = 2 s

The primary and secondary coils of a transformer have 50 and 1500 turns respectively. If the magnetic flux phi linked with the primary coil is given by phi=phi_(0)+4t , where phi is in webers, t is time in second and phi_(0) is a constant, the output voltage across the secondary coil is

The primary and secondary coils of a transmformer have 50 and 1500 turns respectively. If the magnetic flux phi linked with the primary coil is given by phi=phi_(0)+4t , where phi is in weber, t is time in second and phi_(0) is a constant, the output voltage across the secondary coil is

The magnetic flux linked with a coil is given by an equation phi (in webers ) = 8t^(2)+3t+5 . The induced e.m.f. in the coil at the fourth second will be

A coil of resistance 400Omega is placed in a magnetic field. If the magnetic flux phi (wb) linked with the coil varies with time t (sec) as f=50t^(2)+4 , the current in the coil at t=2 sec is

A coil of resistance 400Omega is placed in a magnetic field. If the magnetic flux phi (wb) linked with the coil varies with time t (sec) as f=50t^(2)+4 , the current in the coil at t=2 sec is

The magnetic flux linked with a coil changes by 2 xx 10^(-2) Wb when the current changes by 0.01A. The self inductance of the coil is_______.

RESONANCE ENGLISH-TEST PAPERS-PHYSICS
  1. In the given circuit, in steady state we may say: (capacitor are initi...

    Text Solution

    |

  2. Two wires have identical lengths and areas of cross-section are suspen...

    Text Solution

    |

  3. The magnetic flux (phi) linked with the coil depends on time t as phi=...

    Text Solution

    |

  4. The wire as shown in figure is bent in the shape of a tent, with theta...

    Text Solution

    |

  5. Two smooth spheres A and B of masses 4kg and 8kg move with velocities ...

    Text Solution

    |

  6. A string is holding a solid block below the surface of the liquid as s...

    Text Solution

    |

  7. Four identical paltes (equally spaced) and a battery are connected as ...

    Text Solution

    |

  8. A uniform rigid body, (mass M(1) Radius R) with circular cross-section...

    Text Solution

    |

  9. Figure shows a container filled with a liquid of density rho. Four poi...

    Text Solution

    |

  10. Two isotropic blocks A and B are placed as a shown in the figure and a...

    Text Solution

    |

  11. A metallic V shaped rod OAC is rotated with respect to one of its end ...

    Text Solution

    |

  12. A conducting loop rotates with constant angular velocity about its fix...

    Text Solution

    |

  13. If the resultant force on a system of particles is non-zero, then:

    Text Solution

    |

  14. Two identical balls P and Q moving in the x-y plane collide at the ori...

    Text Solution

    |

  15. A ball of mass 1 kg is thrown up with an initial speed of 4 m//s. A se...

    Text Solution

    |

  16. A person wants to roll a solid non-conducting spherical ball of mass m...

    Text Solution

    |

  17. A person wants to roll a solid non-conducting spherical ball of mass m...

    Text Solution

    |

  18. A prism shaped styrofoam of density rho(styrofoam) (ltrho(water)) is ...

    Text Solution

    |

  19. A uniform prims shaped Styrofoan of density rho(s) is held completely ...

    Text Solution

    |

  20. A long straight wire having uniform resistance per unit length lamda (...

    Text Solution

    |