Home
Class 12
PHYSICS
A coil of area 10cm^2 and 10 turns is in...

A coil of area `10cm^2` and 10 turns is in magnetic field directed perpendicular to the plane and changing at a rate of `10^8 gauss//s`. The resistance of coil is `20Omega`. The current in the coil will be

A

5 amp

B

`0.5` amp

C

`0.05` amp

D

`5xx10^(8)`amp

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION & ALTERNATIVE CURRENT

    VMC MODULES ENGLISH|Exercise ENABLE|50 Videos
  • ELECTROMAGNETIC INDUCTION & ALTERNATIVE CURRENT

    VMC MODULES ENGLISH|Exercise EFFICIENT|49 Videos
  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    VMC MODULES ENGLISH|Exercise IN-CHAPTER EXERCISE-G|10 Videos
  • ELECTROSTATICS

    VMC MODULES ENGLISH|Exercise JEE Advanced (Archive)|89 Videos

Similar Questions

Explore conceptually related problems

A rectangular coil of 20 turns and area of cross-section 25 cm^(2) has a resistance of 100 ohm . If a magnetic field which is perpendicular to the plane of the coil changes at the rate of 1000 telsa per second, the current in the coil is

A coil consists of 200 turns of wire having a total reistance of 2.0Omega . Each turn is a square of side 18cm, and a uniform magnetic field directed perpendicular to the plane of the coil is turned on. If the field changes linearly from 0 to 0.5t in 0.80s , what is the magnitude of induced emf and current in the coil while the field is changing?

A coil consists of 200 turns of wire having a total reistance of 2.0Omega . Each turn is a square of side 18cm, and a uniform magnetic field directed perpendicular to the plane of the coil is turned on. If the field changes linearly from 0 to 0.5T in 0.80s , what is the magnitude of induced emf and current in the coil while the field is changing?

Shows a coil placed in a decreasing magnetic field applied perpendicular to the plane of the coil. The magnetic field is decreasing at a rate of 10 T s^(-1) . Find out current in magnitude and direction of current.

Shows a coil placed in a decreasing magnetic field applied perpendicular to the plane of the coil. The magnetic field is decreasing at a rate of 10 T s^(-1) . Find out current in magnitude and direction of current.

A coil of area 5cm^(2) and having 20 turns is placed in a uniform magnetic field of 10^(3) gauss. The normal to the plane of the coil makes an angle of 60^(@) with the magnetic field. The flux in Maxwell through the coil is:

A coil of area 5cm^(2) and having 20 turns is placed in a uniform magnetic field of 10^(3) gauss. The normal to the plane of the coil makes an angle of 60^(@) with the magnetic field. The flux in Maxwell through the coil is:

A coil of area 500cm^(2) and having 1000 turns is held perpendicular to a uniform field of 0.4 gauss. The coil is turned through 180^(@) in 1//10sec . Calculate the average induced e.m.f.

A rectangular coil of area 50cm^(2) and 100 turns is placed perpendicular to a magnetic field of 10^(-2)Wb//m^(2) . If the coil is withdrawn from the field in 40 ms, calculate the emf induced.

Shows a coil placed in a magnetic field decreasing at a rate of 10 T s^(-1) . There is also a source of emf 30V in the coil. Find the manitude and direction of the current in the coil.

VMC MODULES ENGLISH-ELECTROMAGNETIC INDUCTION & ALTERNATIVE CURRENT -IMPECCABLE
  1. A coil of area 10cm^2 and 10 turns is in magnetic field directed perpe...

    Text Solution

    |

  2. The turn ratio of a transformers is given as 2:3. If the current throu...

    Text Solution

    |

  3. A transformer with efficiency 80% works at 4 kW and 100 V. If the seco...

    Text Solution

    |

  4. In the induction coil, across secondary coil the output voltage is pra...

    Text Solution

    |

  5. The number o turns of primary and secondary coils of a transformer ar...

    Text Solution

    |

  6. If a transfomer of an audio amplifier has output impedance 8000Omega a...

    Text Solution

    |

  7. The coefficient of mutual inductance between the primary and secondar...

    Text Solution

    |

  8. Quantity that remains unchanged in a transformer is

    Text Solution

    |

  9. What is the peak value of the voltage of a 220V ac line?

    Text Solution

    |

  10. If reading of an ammeter is 10 A, the peak value of current is

    Text Solution

    |

  11. In an AC circuit, the impedance is sqrt3 times the reactance, then the...

    Text Solution

    |

  12. An alternating potential V = underset(o)(V) sin omegat is applied acro...

    Text Solution

    |

  13. An Ac voltage is represented by e=220 sin (100pi) t volt and is applie...

    Text Solution

    |

  14. If an AC produces same heat as that produced by a steady current of...

    Text Solution

    |

  15. The potential difference V and the current I flowing through an ins...

    Text Solution

    |

  16. An alternating current is given by I = i1 cos omegat + i2 sin omegat...

    Text Solution

    |

  17. Core of transformer is made up

    Text Solution

    |

  18. A transformer works on the principle of

    Text Solution

    |

  19. A transformer has an efficiency of 80%. It works at 4 kW and 100 V. If...

    Text Solution

    |

  20. In a step - down transformer, the number of turns in

    Text Solution

    |

  21. A step-up transformer operates on a 230 V line and supplies a current ...

    Text Solution

    |