Home
Class 12
PHYSICS
Resistance of galvanometer is G. If shun...

Resistance of galvanometer is G. If shunt required to make its range n times is S, n = _____ .

A

`G/S`

B

`1-G/S`

C

`1+G/S`

D

`S/G`

Text Solution

Verified by Experts

The correct Answer is:
C
Shunt joined with galvanometer = S = `(GI_(G))/(I-I_(G))`
Here, `I=nI_(G)`
`thereforeS=(GI_(G))/(nI_(G)-I_(G))=G/(n-1)`
`thereforen-1=G/S" "thereforen=G/S+1`
Promotional Banner

Topper's Solved these Questions

  • MOVING CHARGES AND MAGNETISM

    KUMAR PRAKASHAN|Exercise SECTION D (MCQs ASKED IN COMPETITIVE EXAMS)|34 Videos

  • MOVING CHARGES AND MAGNETISM

    KUMAR PRAKASHAN|Exercise SECTION C (LONG ANSWER TYPE QUESTIONS)|7 Videos

  • MAGNETISM AND MATTER

    KUMAR PRAKASHAN|Exercise SECTION D Multiple Choice Questions (MCQs) (MCQs asked in Competitive Exams) MCQs asked in Board Exam and GUJCET|7 Videos

  • RAY OPTICS AND OPTICAL INSTRUMENTS

    KUMAR PRAKASHAN|Exercise SECTION-D (MULTIPLE CHOICE QUESTIONS (MCQs))(MCQs ASKED IN COMPETITIVE EXAMS)|142 Videos

Similar Questions

Explore conceptually related problems

The resistance of galvanometer is G ohm and the range is 1 volt. The value of resistance used to convert it into a voltmeter of ragne 10 volt is:-

The resistance of galvanomenter is G and its current capacity is I_(g) . To increase the current capacity by 'n' times, the required value of shunt is ______ .

1A current is passed through a parallel combination of 8Omega resistance of galvanometer and 2Omega resistance of shunt. Then current passing through shunt is _______

Resistance of ammeter made by combination of 20Omega galvanometer and 2Omega shunt is ______

Resistance of ammeter is ROmega . What will be the required shunt to decrease the value of passing current from 60 A to 20 A ?

The resistance of a moving coil galvanometer is 20Omega . It requires 0.01A current for full scale deflection calculate the value of resistan ce required to convert it into a voltmeter of range 20 volt.

The resistance of an ammeter of range 5A is 1.8Omega A shunt of 0.2Omega is connected in parallel to it. When its indicator shows a current of 2A then what will be effective current?

When shunt connected to galvanometer has the value equal to resistance of galvanometer, range of current meter would become _______

In the circuit the current is to be measured. What is the value of the current if the ammeter shown (a) is a galvanometer with a resistance R_G = 60.00 Omega , (b) is a galvanometer described in (a) but converted to an ammeter by a shunt resistance r_s= 0.02 Omega , (c ) is an ideal ammeter with zero resistance?

The resistance of an ammeter is 13 Omega and its scale is graduated for a current upto 100 A . After an additional shunt has been connected to this ammeter it becomes possible to measure currents upto 750 A by this meter. The value of shunt resistance is

KUMAR PRAKASHAN-MOVING CHARGES AND MAGNETISM-SECTION D (MULTIPLE CHOICE QUESTIONS)
  1. When 2.5Omega shunt is connected with 25Omega resistance of galvanomet...

    Text Solution

    |

  2. Give unit of torsional constant.

    Text Solution

    |

  3. To turn galvanometer into ammeter,

    Text Solution

    |

  4. Resistance of galvanometer is G. If shunt required to make its range n...

    Text Solution

    |

  5. Resistance of ammeter is ROmega. What will be the required shunt to de...

    Text Solution

    |

  6. The resistance of galvanomenter is G and its current capacity is I(g)....

    Text Solution

    |

  7. A galvanometer coil has a resistance of 12Omega and the metre shows fu...

    Text Solution

    |

  8. The current capacity of ammeter having 9Omega resistance is 1A. Now to...

    Text Solution

    |

  9. Range of voltmeter with increase in series resistance.

    Text Solution

    |

  10. Resistance of ammeter made by combination of 20Omega galvanometer and ...

    Text Solution

    |

  11. Wire used for shunt should be

    Text Solution

    |

  12. By connecting shunt of 12Omega resistance, the deflection of galvanome...

    Text Solution

    |

  13. Resistance of ammeter is ROmega. What will be the required shunt to de...

    Text Solution

    |

  14. One rectangular coil carrying current I, has N no. of identical turns,...

    Text Solution

    |

  15. A conducting rod of mass 1 kg and length 1 m is suspended by two strin...

    Text Solution

    |

  16. An electron of mass m and charge q is travelling with a speed v along ...

    Text Solution

    |

  17. An electron (mass = 9.0xx10^(-31)kg and charge = 1.6xx10^(-19)coulomb)...

    Text Solution

    |

  18. An electron (mass = 9xx10^(-31)kg, charge = 1.6xx10^(-19)C) whose kine...

    Text Solution

    |

  19. A : Cyclotron does not accelerate electron. R : Mass of the electron...

    Text Solution

    |

  20. A : Torque on the coil is the maximum, when coil is suspended in a rad...

    Text Solution

    |