Home
Class 12
PHYSICS
A moving coil galvanometer A has 200 tur...

A moving coil galvanometer `A` has 200 turns and resistance `100 Omega`. Another meter `B` has 100 turns and resistance `40 Omega`. All the other quantities are same in both the cases. The current sensitivity of

A

`B` is double as that of `A`

B

`A` is 2 times of `B`

C

`A` is 5 times of `B`

D

`B` is 5 times of `A`.

Text Solution

Verified by Experts

The correct Answer is:
B

`(theta)/(i)=(NAB)/(C)`
Promotional Banner

Topper's Solved these Questions

  • MOVING CHARGES AND MAGNETISM

    NARAYNA|Exercise LEVEL-III|45 Videos
  • MOVING CHARGES AND MAGNETISM

    NARAYNA|Exercise NCERT Based Questions|20 Videos
  • MOVING CHARGES AND MAGNETISM

    NARAYNA|Exercise LEVEL-I(C.W)|58 Videos
  • MAGNETISM AND MATTER

    NARAYNA|Exercise EXERCISE - 4 (SINGLE ANSWER TYPE QUESTION)|17 Videos
  • NUCLEAR PHYSICS

    NARAYNA|Exercise LEVEL-II-(H.W)|9 Videos

Similar Questions

Explore conceptually related problems

A moving coil galvanometer A has 100 turns and resistance 10Omega . Another goal galvanometer B has 50 turns and 5 Omega . The other quantities are same in both the cases. Then the voltange sensitivity of

A moving coil galvanometer of resistance 100Omega is used as an ammeter using a resistance 0.1 Omega . The maximum diflection current in the galvanometer is 100 muA . Find the minimum current in the circuit so that the ammeter shows maximum deflection

A moving coil galvanometer has a resistance of 990Omega. in order to send only 10% of the main currect through this galvanometer, the resistance of the required shunt is

A galvanometer of resistance 100Omega has voltage sensitivity 2 div/volt.t he current sensitvity of galvanometer is

A moving coil galvanometer of resistance 5 Omega has voltage sensitivity 2 div per mV. Its current sensitivity in div per mA is

A voltmeter of resistance 200 Omega is used to measure p.d across resistances 100 Omega and 200 Omega . .

A moving coil galvanometer has 100 turns and a resistance of 10ohm. The coil is 5 cm long and 4 cm wide. A potential difference of 100mV produces a full scale deflection ( the coil is turned through 60^@ ). The flux density in the gap is 1000G . The required torque of the controlling spring is

The deflection in a moving coil galvanometer is reduced to half, when it is shunted with a resistance 40 Omega . The resistance of the galvanometer is

A galvanometer has resistance 100 Omega and it requires current 100 muA for full scale deflection. A resistor 0.1 Omega is connected to make it an ammeter. The smallest current required in the circuit to produce the full scale deflection is

NARAYNA-MOVING CHARGES AND MAGNETISM-Level-II(C.W)
  1. A horizontal wire of length 0.5m carries a current of 5A. If the mass ...

    Text Solution

    |

  2. Currents of 10A, 2A are passed through two parallel wires A and B resp...

    Text Solution

    |

  3. Two long parallel conductors carry currents i and 2I in the same direc...

    Text Solution

    |

  4. A horizontal wire carries 200amp current below which another wire of l...

    Text Solution

    |

  5. Two long parallel conductors are placed at right angles to a metre sca...

    Text Solution

    |

  6. A rectangular loop of wire of size 4 cm // 10cm carries a steady curre...

    Text Solution

    |

  7. Wire 1 in Fig. is oriented along the y-axis and carries a steady curre...

    Text Solution

    |

  8. A square loop of side L carries a current I. Another smaller square lo...

    Text Solution

    |

  9. A coil in the shape of an equilateral triangle of side 0.02 m is suspe...

    Text Solution

    |

  10. A moving coil galvanometer A has 200 turns and resistance 100 Omega. A...

    Text Solution

    |

  11. A rectangular coil of size 3xx3cm consisting of 100 turns caries 0.1A....

    Text Solution

    |

  12. To increase the current sensitivity of a moving coil galvanometer by 5...

    Text Solution

    |

  13. A galvanometer of resistance 25Omega is connected to a battery of 2 vo...

    Text Solution

    |

  14. A voltmeter has a range O - V with a series resistance R. With a serie...

    Text Solution

    |

  15. A 100 V voltmeter having an internal resistance of 20 k Omega is conne...

    Text Solution

    |

  16. A galvanometer ahs resistance G and Current I(g) produces full scale d...

    Text Solution

    |

  17. Tha scale of a galvanometer is divided into 150 equal divisions. The g...

    Text Solution

    |

  18. In a circuit 5 percent of total current passes through a galvanometer....

    Text Solution

    |

  19. A galvanometer has a sensitivity of 60 division/ampere. When a shunt i...

    Text Solution

    |

  20. The sensitivity of a galvanometer that measures current is decreased b...

    Text Solution

    |