Home
Class 11
PHYSICS
The resistance of a coil is 5 ohm and a ...

The resistance of a coil is 5 ohm and a current of 0.2A is induced in it due to a varying magnetic field. The rate of change of magnetic flux in it will be-

A

0.5 W/b

B

0.05 Wb/s

C

1 W b/s

D

20 Wb/s

Text Solution

Verified by Experts

The correct Answer is:
C
`R= 5Omega , i=0.2A`,
`V=-(dphi)/(dt)=ixxR=5xx0.2 =1` volt
Rate of change of magnetic flux =1 volt `=(1wb)/(mu)`
Promotional Banner

Topper's Solved these Questions

  • ELASTICITY AND VISCOCITY

    RESONANCE|Exercise Advanced Level Problems|9 Videos

  • ELECTROSTATICS

    RESONANCE|Exercise Exercise|52 Videos

Similar Questions

Explore conceptually related problems

Induced electric field due to changing magnetic field

How current can be induced in a coil due to a magnet?

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

A rectangular coil of 25 turns, area of 25cm^(2) and resistance of 4 ohm//turn is placed perpendicular to a varying magnetic field, which changes at the rate of 500 T//s . The induced current in the coil is

In a coil of resistance 100 Omega , a current is induced by changing the magnetic flux through it as shown in the figure. The magnitude of change in flux through the coil is

The circulating induced current produced in a metal plate due to the change in magnetic flux are

A coil of 1500 turns and mean area of 500 cm^2 is held perpendicular to a uniform magnetic field of induction 2 xx 10^(-4) T . The resistance of the coil is 40 ohms. When the coil is rotated through 180^@ in the magnetic field in 0.2 seconds the average electric current (in mA) induced is

By a change of current from 5 A to 10 A in 0.1 s, the self induced emf is 10 V. The change in the energy of the magnetic field of a coil will be

a coil of 1200 turns and mean area of 500 cm^(2) is held perpendicular to a uniform magnetic field of induction 4 xx 10^(-4) T . The resistance of the coil is 20 ohms. When the coil is rotated through 180^(@) in the magnetic field in 0.1 seconds the average electric current (in mA ) induced is :

RESONANCE-ELECTROMAGNETIC INDUCTION-Exercise
  1. An electron is moving near to a conducting loop then the induced curre...

    Text Solution

    |

  2. The magnetic flux linked with a coil, in webers, is given by the equat...

    Text Solution

    |

  3. A metallic conductor of 1m length is rotated verically its one end at ...

    Text Solution

    |

  4. The resistance of a coil is 5 ohm and a current of 0.2A is induced in ...

    Text Solution

    |

  5. If the length and area of cross-section of an inductor remain same but...

    Text Solution

    |

  6. Self-inductance of a solenoid depend on-

    Text Solution

    |

  7. When current flowing in a coil changes from 3A to 2A in one millisecon...

    Text Solution

    |

  8. In the figure magnetic energy stored in the coil is

    Text Solution

    |

  9. The self inductance of a solenoid of length L, area of cross-section A...

    Text Solution

    |

  10. Energy is stored in the choke coil in the form of

    Text Solution

    |

  11. The self-inductances of two identical coils are 0.1H. They are wound o...

    Text Solution

    |

  12. The magnetic flux through a circuit of resistance R changes by an amou...

    Text Solution

    |

  13. A conducting circular loop is placed in a uniform magnetic field, B=0....

    Text Solution

    |

  14. Which of the following is proportional to energy density in magnetic f...

    Text Solution

    |

  15. When two co-axial coils having same current in same direction are brin...

    Text Solution

    |

  16. A magnetic field can be produced by

    Text Solution

    |

  17. A bar magnet is dropped between a current carrying coil. What would be...

    Text Solution

    |

  18. Lenz's law gives:

    Text Solution

    |

  19. Statement 1: Electric field produced by changing magnetic field is non...

    Text Solution

    |

  20. Statement I: Two coaxial conducting rings of different radii are place...

    Text Solution

    |