Home
Class 12
PHYSICS
The coil of galvanometer consists of 80 ...

The coil of galvanometer consists of 80 turns and effective area of 5 `cm^(2)`. The restoring couple is `10^(-8)` Nm//radian. The magnetic field between the pole pieces is 5 T. The current sensitivity of this galvanometer is

A

`5 xx 10^(4) "rad/"muA`

B

`5 xx 10^(-6) "rad/A"`

C

`2 xx 10^(-7)"rad/A"`

D

`20 "rad/"muA`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • MAGNETIC EFFECT OF ELECTRIC CURRENT

    TARGET PUBLICATION|Exercise COMPETITIVE THINKING|111 Videos
  • MAGNETIC EFFECT OF ELECTRIC CURRENT

    TARGET PUBLICATION|Exercise EVALUATION TEST|19 Videos
  • MAGNETIC EFFECT OF ELECTRIC CURRENT

    TARGET PUBLICATION|Exercise EVALUATION TEST|19 Videos
  • KINETIC THEORY OF GASES AND RADIATION

    TARGET PUBLICATION|Exercise Evaluation test|18 Videos
  • MAGNETISM

    TARGET PUBLICATION|Exercise EVALUATION TEST|14 Videos

Similar Questions

Explore conceptually related problems

The coild of a galvanometer consists of 100 turn and effective area 1 cm^(2) . The restoring couple is 10^(-8) n-m//rad . The magnetic field between the pole pieces 5 tesla. The current sensitivty per micro ampere.

The coil of a moving coil galvanometer has 100 turns each of area 15 cm^(2) . It is suspended in a radial magnetic field of induction 3 xx 10^(-2)Wb//m^(2) . What is the current senstivity of the moving coil galvanometer, if the torsional constant of the suspension fiber is 1.5 xx 10^(-8)Nm /radian ?

The purpose of soft iron cylinder between the pole pieces of the horse - shoe magnet in a moving coil galvanometer is

A coil of a moving coil galvanometer has 100 turns and effective area of 0.005 m^(2) . It is suspended in a radial magnetic field of induction 0.001 Wb//m^(2) . The torque per unit twist of thr suspension fibre is 5 xx 10^(-9)Nm /degree. What is the currebnt sectivity of the moving coil galvanometer?

A moving coil galvanometer has N numbr of turns in a coil of effective area A , it carries a current I . The magnetic field B is radial. The torque acting on the coil is

A rectangular coil of a moving coil galvanometer contains 100 turns, each having area 15 cm^(2) . It is suspended in the radial magnetic field 0.03 T. The twist constant of suspension fibre is 15xx10^(-10) N-m/degree. Calculate the sensitivity of the moving coil galvanometer.

A moving coil galvanometer has 28 turns and area of coil is 4 xx 10^(-2) m^(2) .If the magnetic field is 0.2 T, then to increase the current sensitivity by 25% without changing area and field, the number of turns should be changed to

TARGET PUBLICATION-MAGNETIC EFFECT OF ELECTRIC CURRENT-CRITICAL THINKING
  1. A galvanometer may be converted into an ammeter or a voltmeter. In whi...

    Text Solution

    |

  2. Voltmeters V(1) and V(2) are connected in series across a D.C. line V(...

    Text Solution

    |

  3. What is the relation between voltage sensitivity S(v) and the current ...

    Text Solution

    |

  4. The Senstivity of a galvanometer is 60"div"//Ampere. When a shunt is u...

    Text Solution

    |

  5. A moving coil galvanometer of resistance 5 Omega has voltage sensitivi...

    Text Solution

    |

  6. A galvanometer of resistance 95 Omega shunted by a resistance of 5 Ome...

    Text Solution

    |

  7. A moving coil galvanometer has 28 turns and area of coil is 4 xx 10^(-...

    Text Solution

    |

  8. The coil of galvanometer consists of 80 turns and effective area of 5 ...

    Text Solution

    |

  9. A galvanometer has a current sensitivity of 5 divisions per milliamper...

    Text Solution

    |

  10. If a shunt 1//10 of the coil resistance is applied to a moving coil ga...

    Text Solution

    |

  11. An alpha particle of positive charge +2e is compelled to rotate along ...

    Text Solution

    |

  12. A uniform magnetic field acts right angles to the direction of motion ...

    Text Solution

    |

  13. A cyclotron in which flux density is 1.4 T is employed to accelerate p...

    Text Solution

    |

  14. In a cyclotron, the time taken by ion to describe a semicircular path ...

    Text Solution

    |

  15. The maximum kinetic energy of protons in a cyclotron of radius 0.4 m i...

    Text Solution

    |

  16. The scale of galvanometer is divided into 150 equal divisions. The gal...

    Text Solution

    |

  17. The ratio of the magnetic field at the centre of a current carrying ci...

    Text Solution

    |

  18. Two infinite length wires carry currents 8A and 6A and are placed alon...

    Text Solution

    |

  19. In an ammeter, 4% of the main current is passing through the galvanome...

    Text Solution

    |

  20. Assertion : In a shunted galvanometer, only 10% current passes through...

    Text Solution

    |