Home
Class 12
PHYSICS
The variation of induced emf (F) with ti...

The variation of induced emf `(F)` with time `(t)` in a coil if a short bar magnet is moved along its axis with a constant velocity is best represent as

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
B
As the magnet moves towards the coil, the magnetic flux increase (nonlinearly). Also there is a change in polarity of induced emf when the magnet passes on to the other side of the coil.
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    A2Z|Exercise Motional And Rotational Emf|95 Videos

  • ELECTROMAGNETIC INDUCTION

    A2Z|Exercise Inductor Circuits|31 Videos

  • ELECTRIC POTENTIAL & CAPACITANCE

    A2Z|Exercise Section D - Chapter End Test|29 Videos

  • ELECTROMAGNETIC WAVES AND COMMUNICATION SYSTEM

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

Give the direction of the induced current in a coil mounted on an insulating stand when a bar magnet is quickly moved along the axis of the coil from one side to the other as shown in figure.

In the diagram shown if a bar magnet is moved along the common axis of two single turn coils A and B in the direction of arrow

If a bar magnet is moved inside a toroid, will there be any induced emf? Give Reason.

The graph representing the variation of induced magnetic field in the gap of the condenser plates during its charging with the distance from the axis of the gap is

STATEMENT -1 : The force acting on a particle moving alongx -axis is F = - alpha ( x+ vt) , where alpha is a constant. and STATEMENT-2 : To anobserver moving along x-axis with constant velocity v, it represents SHM.

The velocity (v) - time (t) graph for a particle moving along x - axis is shown in the figure. The corresponding position (x) - time (t) is best represented by

A small bar magnet moves along the axis of a flat, closed coil. The magnet will attract the coil

A cylindrical bar magnet is kept along the axis of circular coil and near it as shown in Fig. Will there be any induced emf at the terminals of the coil, when magnet is rotated (a) about its own axis (b) about an aixs perpendicular to the length of the magnet ?

A2Z-ELECTROMAGNETIC INDUCTION-Section D - Chapter End Test
  1. The variation of induced emf (F) with time (t) in a coil if a short ba...

    Text Solution

    |

  2. Two pure inductors each of self-inductance L are connected in parallel...

    Text Solution

    |

  3. A coil and a bulb are connected in series with a dc source, a soft iro...

    Text Solution

    |

  4. The current flowing in a coil of self-inductance 0.4 mH is increased b...

    Text Solution

    |

  5. 5 cm long solenoid having 10 ohm resistance and 5mH induced is joined ...

    Text Solution

    |

  6. A solenoid has an inductance of 60 henrys and a resistance of 30 ohms....

    Text Solution

    |

  7. In a circular conducting coil, when current increases from 2A to 18A i...

    Text Solution

    |

  8. Find out the e.m.f. produced when the current change from 0 to 1A in 1...

    Text Solution

    |

  9. A coil of 100 turns carries a current of 5mA and creates a magnetic fl...

    Text Solution

    |

  10. If the current 30A flowing in the primary coil is made zero in 0.1 sec...

    Text Solution

    |

  11. A square loop of side 5 cm enters a magnetic field with 1cms^(-1). The...

    Text Solution

    |

  12. A small coil is introduced between the poles of an electromagnet so th...

    Text Solution

    |

  13. Two circular coils A and B are facing each other as shown in figure. T...

    Text Solution

    |

  14. If in a coil rate of change of area is (5meter^(2))/(milli second)and ...

    Text Solution

    |

  15. Two coils P and Q are placed co-axially and carry current I and I' re...

    Text Solution

    |

  16. The phase difference between the flux linkage and the induced e.m.f. i...

    Text Solution

    |

  17. A hundred turns of insulated copper wire are wrapped around an iron cy...

    Text Solution

    |

  18. In circular coil, when no. of turns is doubled and resistance becomes ...

    Text Solution

    |

  19. In a transformer, number of turns in the primary coil are 140 and that...

    Text Solution

    |

  20. Two coil are placed close to each other. The mutual inductance of the ...

    Text Solution

    |

  21. When the current changes from +2A to -2A in 0.05 second, an e.m.f. of ...

    Text Solution

    |