Home
Class 12
PHYSICS
A flexible wire bent in the form of a ci...

A flexible wire bent in the form of a circle is placed in a uniform magnetic field perpendicular to the plane of the coil. The radius of the coil changing as shown in figure. The graph of induced emf in the coil is represented by

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
b
Promotional Banner

Topper's Solved these Questions

  • ELECTRO MAGNETIC INDUCTION

    MOTION|Exercise EXERCISE-3 (Assertion & Reasoning)|18 Videos

  • ELECTRO MAGNETIC INDUCTION

    MOTION|Exercise EXERCISE-4| Section A (Prevous Years Problems )|28 Videos

  • ELECTRO MAGNETIC INDUCTION

    MOTION|Exercise EXERCISE-1|72 Videos

  • Electrical Instrument

    MOTION|Exercise EXERCISE -3|16 Videos

  • ELECTRO MAGNETIC WAVES

    MOTION|Exercise EXERCISE - 3 (SECTION - B)|8 Videos

Similar Questions

Explore conceptually related problems

A flexible wire bent in the form of a circle is place in a uniform magnetic field perpendicularly to the plane of the coil. The radius of the coil changes as shown in Figure. The graph of magnetude of induced emf in the coil is represented by

A circular coil carrying current is placed in a region of uniform magnetic field acting perpendicular to the plane of the coil as shown in figure. The correct choice among the following is

A rectangular coil is placed in a region having a uniform magnetic field B perpendicular to the plane of the coil. An emf will not be induced ion the coil if the

Find the emf induced in the coil shown in figure.The magnetic field is perpendicular to the plane of the coil and is constant.

Find the emf induced in the coil shown in figure. The magnetic field is perpendicular to the plane of the coil and is constant.

Radius of a circular ring is changing with time and the coil is placed in uniform magnetic field perpendicular to its plane. The variation of 'r' with time 't' is shown in Fig. Then induced emf e with time t will be best represented by

A coil of area 10 cm^2 has 200 turns. Magnetic field of 0.1 Wb//m^2 is perpendicular to the plane of the coil. The field is reduced to zero in 0.1 s, the induced emf in the coil is

A coil is placed in a constant magnetic field. The magnetic field is parallel to the plane of the coil as shown in Fig. 3.28. Find the emf induced in the coil if B increasing.

The (tau - theta) graph for a current carrying coil placed in a uniform magnetic field is

A circular coil of radius r is placed in a uniform magnetic field B. The magnetic field is normal to the plane of the coil is rotated at an angular speed of omega , about its own axis , then the induced emf in the coil is __

MOTION-ELECTRO MAGNETIC INDUCTION-EXERCISE-2 (Objective problems (Analytical questions))
  1. A coil of resistance 10 Omega and 1000 turns have the magnetic flux li...

    Text Solution

    |

  2. One coil of resistance 40 Omega is connected to a galvanometer of 16 O...

    Text Solution

    |

  3. A flexible wire bent in the form of a circle is placed in a uniform ma...

    Text Solution

    |

  4. A short bar magnet passes at a steady speed right through a long solen...

    Text Solution

    |

  5. A square loop of side 22 cm is changed to a circle in time 0.4 sec wit...

    Text Solution

    |

  6. The magnetic flux in a coil of 100 turns increase by 12 xx10^(3) Maxw...

    Text Solution

    |

  7. Which of the following can produce maximum induced emf?

    Text Solution

    |

  8. A solenoid has an inductance of 10 henty and a resistance of 2 ohm. It...

    Text Solution

    |

  9. An inductance coil have the time constant 4 sec, if it is cut into two...

    Text Solution

    |

  10. Which statement is correct from following (a) Inductor store ener...

    Text Solution

    |

  11. Two coils are made of copper wires of same length in the first coil t...

    Text Solution

    |

  12. If a current of 2A give rise a magnetic flux of 5xx10^(-5) weber/turn ...

    Text Solution

    |

  13. For a solenoid keeping the turn density constant its length makes halv...

    Text Solution

    |

  14. In the circuit shown in figure bulb will become suddenly bright if :-

    Text Solution

    |

  15. Two bulb of same rating B(1) and B(2) are connected in series with the...

    Text Solution

    |

  16. A constant current I is maintained in a solenoid. Which of lthe follo...

    Text Solution

    |

  17. A coil of copper wire is connected in series with a bulb, a battery an...

    Text Solution

    |

  18. The inductance of a solenoid is 5 henery and its resistance id 5 Omega...

    Text Solution

    |

  19. When a certain circuit consistance of a constant emf . E, an inductanc...

    Text Solution

    |

  20. An LR circuit with a battery is connected at t=0. Which of the follow...

    Text Solution

    |