Home
Class 12
PHYSICS
An ammeter and a voltmeter of resistance...

An ammeter and a voltmeter of resistance `R` connected in seires to an electric cell of negligible internal resistance. Their readings are `A` and `V` respecitvely. If another resistance `R` is connected in parallel with the voltmeter

A

Both A and V will increase

B

Both A and V will decreases

C

A will decrease and V will increase

D

A will increase and V will decrease

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    DC PANDEY|Exercise B. Assertion and reason|18 Videos

  • CURRENT ELECTRICITY

    DC PANDEY|Exercise Match the columns|4 Videos

  • CURRENT ELECTRICITY

    DC PANDEY|Exercise Check point|70 Videos

  • COMMUNICATION SYSTEM

    DC PANDEY|Exercise Subjective|11 Videos

  • ELECTROMAGNETIC INDUCTION

    DC PANDEY|Exercise Medical entrances gallery|25 Videos

Similar Questions

Explore conceptually related problems

An ammeter and a voltmeter of resistance R are connected in series to an electric cell of negligible internal resistance . Their readings are A and V respectively. If another resistance R is connected in parallel with the voltmeter , then

An ammeter and a voltmeter are j oined in series to a cell. Their readings are A and V respectively. If a resistance is now joined in parallel with the voltmeter

An ammeter and a voltmeter are joined in sereis to a cell. Their readings are A and V respectively. If a resistance is now joinding parallel with the voltmeter. Then

A voltmeter of resistance R_1 and an ammeter of resistance R_2 are connected in series across a battery oif negligible internal resistance. When as resistance R is connected in parallel to voltmeter reading of ammeter increases three times white that of voltmeter reduces to one third. Find R_1 and R_2 in terms of R .

A voltmeter of resistance R_(V) and an ammeter of resistance R_(A) are connected in series across a battery of emf E and of negligible internal resistance . When a resistance R is connected in parallel to volmeter , reading of ammeter increases to three times while that of volmeter reduces to one - third. Calculate R_(A)andR_(V) in terms of R.

An ammeter, voltmeter and a resistor are connected in series to a cell and the readings are noted as I and V. If another resistor R is connected in parallel with a voltmeter, then

An ammeter of zero resistance and a volt meter are connected in series to a battery of emf 6.0 volt and certain internal resistance. When a resistance R is connected in parallel with the voltmeter the readings of the voltmeter becomes half of its initial reading and the reading of the ammeter becomes 2 times to its initial reading (before R is connected). Find the voltmeter reading in volt after the connection of the resistance.

In the circuit shows in Fig. 6.42 , resistors X and Y , each with resistance R , are connected to a 6 V battery of negligible internal resistance. A voltmetre, also of resistance R , is connected across Y . What is the reading of the voltmeter?

DC PANDEY-CURRENT ELECTRICITY-Taking it together
  1. The current (I) and voltage (V) graphs for a given metallic wire at tw...

    Text Solution

    |

  2. Which of the follwing characteristies of electrons determines the curr...

    Text Solution

    |

  3. An ammeter and a voltmeter of resistance R connected in seires to an e...

    Text Solution

    |

  4. The resistance of a wire is 10 Omega. Its length is increased by 10% b...

    Text Solution

    |

  5. Four resistances are connected in a circuit in the given figure. The e...

    Text Solution

    |

  6. Current through the 5Omega resistor is

    Text Solution

    |

  7. A cell which has an emf 1.5 V is connection series with an external re...

    Text Solution

    |

  8. A piece of wire of resistance 4 ohm s is bent through 180^(@) at its...

    Text Solution

    |

  9. A wire of resistance R is divided in 10 equal parts. These parts are c...

    Text Solution

    |

  10. Three resistors each of 2 ohm are connected together in a triangular s...

    Text Solution

    |

  11. The effective resistance between the points A and B in the figure is

    Text Solution

    |

  12. Two resistances are joined in parallel whose resultant is 6//8 ohm. On...

    Text Solution

    |

  13. A wire of resistanc e9Omega is broken in two parts. The length ratio b...

    Text Solution

    |

  14. In the network shown, the equivalent resistance between A and B is

    Text Solution

    |

  15. In the circuit shown, the currents i(1) and i(2) are

    Text Solution

    |

  16. Consider the following statements regarding the network shown in the f...

    Text Solution

    |

  17. To send 10% of the main current through a moving coil galvanometer of ...

    Text Solution

    |

  18. A 1250 W heater operates at 115V. What is the resistance of the heatin...

    Text Solution

    |

  19. The resistance of a wire at 20^(@)C is 20Omega and at 500^(@)C is 60Om...

    Text Solution

    |

  20. A conducting wire of cross-sectional area 1 cm^(2) has 3 xx 10^(23) ...

    Text Solution

    |