Home
Class 12
PHYSICS
The mangnetic flux passsing perpendicula...

The mangnetic flux passsing perpendicular to the plane of a coil and directed into the paper is given by `phi = 5t^(2) + 6t+ 2` where `phi` is in milliwebers and `t` in seconds.
(a) What is the magnitude of the induced emf set up in the loop at `t=1s`?
(b) What is the direction of current through the resistor R ?

Promotional Banner

Topper's Solved these Questions

  • ELECTRICAL INSTRUMENTS

    SL ARORA|Exercise Problem for self practice|81 Videos

  • ELECTROMAGNETIC WAVES

    SL ARORA|Exercise Problem for self-practice|21 Videos

Similar Questions

Explore conceptually related problems

The magnetic flux passing prependicular to the plane of the coil directed into the paper is varying according to the relation phi=6t^(2)+8t+I0 , where phi is in weber and t in second. (a) What is the magnitude of emf induced in the loop when t=2sec ? (b) What is the magnitude and direction of current at t=2sec ?

The magnetic flux passing perpendicular to the plane of the coil and directed into the paper is varying according to the relation phi = 3t^(2) + 2t + 3 , where phi is in milliweber and t is in second. Then the magnitude of emf induced in the loop when t = 2 second is-

The magnetic flux passing perpendicular to the plane of a coil given by phi=6t^(2)+4t+3 Where phi is in milliweber and t is in seconds. What is the e.m.f. induced in the coil at t=1 sec?

In Fig. 30-60, the magnetic flux through the loop increases according to the relation phi_(B) = 3.0t^(2) = 7.0t , where phi_(B) is in milliwebers and tis in seconds. (a) What is the magnitude of the emf induced in the loop when t = 1.5 s? (b) Is the direction of the current through R to the right or left?

The magnetic flux through a loop varries according to the relation ∅ = 8t^(2)+ 6t + 2, ∅ is in milliweber and t is in second. What is the magnitude of the induced emf in the loop at t = 2 seconds?

The magnetic flux thropugh a loop varies according to the relation phi= t^2 + 6t+C , where 'C' is constant, phi is in milliwebe3r and 't' is in sedcond. What is the mognitude of induced e.m.f. in the loop at t = 2 seconds ?

The magnetic flux through a loop is varying according to relation phi=6t^(2)+7t+1 where phi is in milliweber and t is in second. What is the e.m.f. induced in the loop at t = 2 second ?

The magnetic flux linked with a closed circuit of resistance 8Omega varies with time according to the expression phi = (5t^2 – 4t + 2) where phi is in milliweber and t in second. Calculate the value of induce current at t = 15 s.

The magnetic flux (phi) in a closed circuit of resistance 20 Omega varies with time (t) according to the equation phi = 7t^(2) - 4t where phi is in weber and t is in seconds. The magnitude of the induced current at t =0.25s is

SL ARORA-ELECTROMAGNETIC INDUCTION-All Questions
  1. A rectangular loop of area 20 cm xx 30 cm is held in a magnetic field ...

    Text Solution

    |

  2. A coil of 100 turns is pulled in 0.04 s from between the poles of a m...

    Text Solution

    |

  3. The mangnetic flux passsing perpendicular to the plane of a coil and d...

    Text Solution

    |

  4. A coil of area 500cm^(2) and having 1000 turns is held perpendicular t...

    Text Solution

    |

  5. A coil with an average diameter of 0.02 m is placed perpendicular to a...

    Text Solution

    |

  6. A wire 88 cm long bent into a circular loop is placed perpendicular to...

    Text Solution

    |

  7. A magnetic field of flux density 10 T acts normal to a cail of 50 turn...

    Text Solution

    |

  8. 5.5 xx 10^(–4) Magnetic flux lines are passing through a coil of resis...

    Text Solution

    |

  9. A coil of area A lies in a uniform magnetic field B with its plane per...

    Text Solution

    |

  10. A long solenoid of 10 turns / cm has a small loop of area 1 sq. cm pl...

    Text Solution

    |

  11. An air cored solenoid with length 30 cm, area of cross-section 25 cm^(...

    Text Solution

    |

  12. A copper rod of length L rotates with an angular with an angular speed...

    Text Solution

    |

  13. A metal disc of radius R rotates with an angular velcoity omega about ...

    Text Solution

    |

  14. A wheel with ten metallic spokes each 0.50 m long is rotated with a sp...

    Text Solution

    |

  15. When a wheel with metal spokes 1.2 m long rotates in a magnetic field ...

    Text Solution

    |

  16. A metallic rod of 1 m length is rotated with a frequency of 50 rev//s,...

    Text Solution

    |

  17. A circular copper disc of 10 cm radius rotates at 20 pi radian//sec ab...

    Text Solution

    |

  18. Prove that the charge induced does not depend on the rate of change of...

    Text Solution

    |

  19. It is desired to measure the magnitude of field between the poles of a...

    Text Solution

    |

  20. A 10 ohm resistance coil has 1000 turns and at a time, magnetic flux 5...

    Text Solution

    |