Home
Class 12
PHYSICS
Two resistors 400Omega and 800Omega are ...

Two resistors `400Omega` and `800Omega` are connected in series with a `6V` battery. It is desired to measure the current in the circuit. An ammeter of `10Omega` resistance is used for this purpose figure. What will be the reading in the ammeter? Similarly, if a voltmeter of `10,000Omega` resistance is used to measure the potential difference across the `400Omega` resistor, what will be the reading in the voltmeter?

A

2 V

B

`1.95` V

C

`3.8` V

D

4 V

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    DC PANDEY ENGLISH|Exercise B. Assertion and reason|18 Videos
  • CURRENT ELECTRICITY

    DC PANDEY ENGLISH|Exercise Match the columns|4 Videos
  • CURRENT ELECTRICITY

    DC PANDEY ENGLISH|Exercise Check point|70 Videos
  • COMMUNICATION SYSTEM

    DC PANDEY ENGLISH|Exercise Subjective|11 Videos
  • ELECTROMAGNETIC INDUCTION

    DC PANDEY ENGLISH|Exercise Medical entrances gallery|25 Videos

Similar Questions

Explore conceptually related problems

A voltmeter with resistance 500 Omega is used to measure the emf of a cell of internal resistance 4 Omega . The percentage error in the reading of the voltmeter will be

Two resistor 400 Omega and 800 Omega connected in series across a 6 V battery . Reading of Voltmeter of 10 k Omega across 400 Omega resistor is close to :

(a)find the potential drops across the two resistors shown in figure. (b) A voltmeter of resistance (600 Omega) is used to measure the potential drop across the (300 Omega) resistor.What will be the measured potential drop?

The voltmeter shown in figure reads 18V across the 50(Omega) resistor. Find the resistance of the voltmeter.

50 Omega and 100 Omega resistors are connected in series. This connection is connected with a battery of 2.4 volts. When a voltmeter of 100 Omega resistance is connected across 100 Omega resistor, then the reading of the voltmeter will be

Redraw the circuit of Q.12 , putting in an ammeter to measure the current through the resistors and a voltmeter to measure the voltage across the 12 ohm resistor. What would be the readings in the ammeter and the voltmeter ?

Two resistance of 400 Omega and 800 Omega are connected in series with 6 volt battery of negligible internal resistance. A voltmeter of resistance 10,000 Omega is used to measure the potential difference across 400 Omega . The error in measurement of potential difference in volts approximatley is

Voltmeter V and Ammeter A are used to measure the total potential difference of the circuit and the current through each resistor. Which is the correct circuit ?

Resistance of 100 Omega and 200 Omega are connected in series with 220 V mains. When a voltmeter of 1000 Omega resistance is connected in parallel to 100 Omega , then the reading of voltmeter is

In Fig. 6.59 , when an ideal voltmetre is connected across 4000 Omega resistance, it reads 30 V . If the voltmeter is connected across 3000 Omega resistance, it will read

DC PANDEY ENGLISH-CURRENT ELECTRICITY-Taking it together
  1. The current I drawn from the 5 volt source will be

    Text Solution

    |

  2. The current in the given circuit is

    Text Solution

    |

  3. Two resistors 400Omega and 800Omega are connected in series with a 6V ...

    Text Solution

    |

  4. A battery of emf E has an internal resistance r. A variable resistacne...

    Text Solution

    |

  5. Two resistances are connected in the two gaps of a meter bridge. The b...

    Text Solution

    |

  6. A battery of four cells in series, each having an emf of 1.14 V and an...

    Text Solution

    |

  7. The length of a wire of a potentiometer is 100 cm, and the e.m.f. of i...

    Text Solution

    |

  8. When a resistance of 100Omega is connected in series with a galvanomet...

    Text Solution

    |

  9. Two cells, having the same emf, are connected in series through an ext...

    Text Solution

    |

  10. Two wires of the same material but of different diameters carry the sa...

    Text Solution

    |

  11. Two bulbs consume same energy when operated at 200 V and 300 V , respe...

    Text Solution

    |

  12. A factory is served by a 220 V supply line. In a circuit protected by ...

    Text Solution

    |

  13. Two bulbs 60 W and 100 W designed for voltage 220 V are connected in s...

    Text Solution

    |

  14. A tap supplies water at 22^(@)C, a man takes 1 L of water per min at 3...

    Text Solution

    |

  15. The mean free path of electrons in a metal is 4 xx 10^(-8)m The elect...

    Text Solution

    |

  16. You are given two resistances R(1) and R(2). By using them singly, in ...

    Text Solution

    |

  17. A potentiometer having the potential gradient of 2 mV//cm is used to m...

    Text Solution

    |

  18. In the circuit shown in the figure,

    Text Solution

    |

  19. A galvanometer of resistance 50 Omega is connected to a battery of 3 ...

    Text Solution

    |

  20. When a galvanometer is shunted by resistance S, then its current capac...

    Text Solution

    |