Home
Class 12
PHYSICS
A circular loop enters a uniform magneti...

A circular loop enters a uniform magnetic field as shown in the figure. The current induced in the coil ____

A

is zero

B

in clockwise direction

C

in anticlockwise direction

D

in the direction pointing out of the page

Text Solution

Verified by Experts

The correct Answer is:
B
As the loop enter a magnetic field, the flux linked with the loop increases. The induced current will oppose this increase by producing magnetic field in the direction pointing in to the page. Hence induced current is in clockwise direction.
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    KUMAR PRAKASHAN|Exercise Section D MCQs (MCQs asked in Competitive Exams )|38 Videos

  • ELECTROMAGNETIC INDUCTION

    KUMAR PRAKASHAN|Exercise Section C Ncert Exemplar Solution (Long Answer )|11 Videos

  • ELECTRIC CHARGES AND FIELDS

    KUMAR PRAKASHAN|Exercise SECTION D MCQS ASKED IN COMPETITIVE EXAMES (MCQS AKSED IN BOARD EXAM AND GUJCET)|14 Videos

  • ELECTROMAGNETIC WAVES

    KUMAR PRAKASHAN|Exercise BOARD.S QUESTION PAPER MARCH - 2020 (PART - B) SECTION - C|5 Videos

Similar Questions

Explore conceptually related problems

A coil of area A is placed in the X-Y plane. A uniform magnetic field B_0hati established. The emf induced in the coil is ____

An infinite straight current carrying conductor is bent in such a way that a circular loop is formed on it as shown in the figure. If the radius of the loop is R, the magnetic field at the centre of the loop is ..........

(a) A closed loop is held stationary in the magnetic field between the north and south poles of two permanent magnets held fixed. Can we hope to generate current in the loop by using very strong magnets ? (b) A closed loop moves normal to the constant electric field between the plates of a large capacitor. Is a current induced in the loop (i) when it is wholly inside the region between the capacitor plates (ii) when it is partially outside the plates of the capacitor? The electric field is normal to the plane of the loop. (c) A rectangular loop and a circular loop are moving out of a uniform magnetic field region (Figure) to a field-free region with a constant velocity v. In which loop do you expect the induced emf to be constant during the passage out of the field region? The field is normal to the loops.

A conducting circular loop is placed in a uniform magnetic field of 0.04 T with its plane perpendicular to the field. Some how, the radius of the loop starts shrinking at a constant rate of 2 mm/s. Find the induced emf in the loop at an instant when the radius becomes 2 cm solution.

A circular coil expands radially in a region of magnetic field and no electromotive force is produced in the coil. This can be because

A circular coil of 20 turns and radius 10 cm is placed in a uniform magnetic field of 0.10 T normal to the plane of the coil. If the current in the coil is 5.0 A, what is the (a) total torque on the coil, (b) total force on the coil, (c) average force on each electron in the coil due to the magnetic field? (The coil is made of copper wire of cross-sectional area 10^(-5) m^2 , and the free electron density in copper is given to be about 10^29 m^(-3) .)

A uniform magnetic field is restricted within a region of radius r. The magnetic field changes with time at a rate (dvecB)/(dt) . Loop 1 of radius R gt r encloses the region r and loop 2 of radius R is outside the region of magnetic field as shown in the figure below. Then the emf generated is

A circular coil having N turns is made from a wire L meter long. If a current of I ampere is passed through this coil suspended in a uniform magnetic field of B tesla, find the maximum torque that can act on this coil.

A current carrying loop is placed in a uniform magnetic field. The torque acting on it does not depend upon ______ .

KUMAR PRAKASHAN-ELECTROMAGNETIC INDUCTION-Section D MCQs (From DARPAN Based on Textbook )
  1. A coil of 50 turns is pulled in 0.02 s fron between the poles of a mag...

    Text Solution

    |

  2. Two conducting coils are kept parallel to each other so that they have...

    Text Solution

    |

  3. A circular loop enters a uniform magnetic field as shown in the figure...

    Text Solution

    |

  4. A coil of area A is placed in the X-Y plane. A uniform magnetic field ...

    Text Solution

    |

  5. The current flows from A to B in a straight wire as shown in figure an...

    Text Solution

    |

  6. As shown in fig. a conducting ring R is placed on the axis of a bar ma...

    Text Solution

    |

  7. A conducting circular loop is expanding in a magnetic field of 2T unif...

    Text Solution

    |

  8. A coil has an area of 0.05 m^2 and has 800 turns. After placing the co...

    Text Solution

    |

  9. A rod of 5m length is moving perpendicular to uniform magnetic field o...

    Text Solution

    |

  10. A thin circular ring of area A is held perpendicular to a uniform fiel...

    Text Solution

    |

  11. A magnet is moving towards a coil along its axis and the emf induced i...

    Text Solution

    |

  12. Magnitude of emf produced in a coil, when magnet is inserted in the co...

    Text Solution

    |

  13. One cylindrical bar magnet, kept on the axis of one circular coil. Now...

    Text Solution

    |

  14. The flux linked per each turn of a coil of N turns changes from phi1 ...

    Text Solution

    |

  15. Radius of a conducing wire r and its plane is perpendicular to magneti...

    Text Solution

    |

  16. Area vector of a coil of 5 xx 10^(-3)m^2 makes an angle of 0^@ with a...

    Text Solution

    |

  17. A conducting bar of 3m length is allowed to fall freely from 80m high ...

    Text Solution

    |

  18. The flux linked per each turn of coil of 5xx 10^3 turns changes from 0...

    Text Solution

    |

  19. As shown in the figure, P and Q are two coaxial conducting loops separ...

    Text Solution

    |

  20. The north pole of horizontal bar magnet is being brought closer to ver...

    Text Solution

    |