Home
Class 12
PHYSICS
An ammeter with internal resistance 90Om...

An ammeter with internal resistance `90Omega` reads 1.85 A when connected in a circuit containing a battery and two resistors `700Omega` and `410 Omega` in series. Actual current will be

A

`1.85 A`

B

Greater than `1.85 A`

C

Less than `1.85A`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    ERRORLESS |Exercise Kirchhoff s Law, cells|8 Videos

  • CURRENT ELECTRICITY

    ERRORLESS |Exercise Different Measuring Instruments|1 Videos

  • COMMUNICATION SYSTEM

    ERRORLESS |Exercise S E T|14 Videos

  • ELECTRO MAGNETIC INDUCTION

    ERRORLESS |Exercise SET|20 Videos

Similar Questions

Explore conceptually related problems

An ammeter has an internal resistance of 50 Omega when it is connected in a circuit containing a battery and twio resistance of 300 Omega and 200 Omega in series, it reads 1.2 . The actual current in the circuit, will be

An ammeter of resistance 50 Omega reads 0.5 A, when connected in a circuit. What is the new ammeter reading, if it is shunted by a resistance of 10Omega ? Assume that the current in the main circuit is unchanged.

Two resistors of resistances 2 Omega and 4 Omega when connected to a battery will have :

The series combination of two batteries, both of the same emf 10 V, but different internal resistance of 10 Omega and 5 Omega is connected to the parallel combination of two resistors 30 Omega and R Omega . The voltage difference across the battery of internal resistance 10 Omega is zero, the value of R (in Omega ) is : _________.

Two batteries of emf 4 V and 8 V with internal resistances 1Omega and 2Omega are connected in a circuit with a resistance of 9Omega as shown in figure. The current and potential difference between the points P and Q are

The series combination of two batteries both of the same emf 10 V, but different internal resistance of 20 Omega and 5Omega is connected to the parallel combination of two resistors 30Omega and R Omega . The voltage difference across the battery of internal resistance 20 Omega is zero, the value of R(in Omega ) is __________.

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 cell of emf 2V and internal resistance 4 Omega is connected across a parallel combination of two resistors of resistance 10 Omega and 20 Omega . Find the current through each resistor using Kirchhoff's laws.

ERRORLESS -CURRENT ELECTRICITY-Self Evaluation Test -19
  1. An ammeter with internal resistance 90Omega reads 1.85 A when connec...

    Text Solution

    |

  2. Figure 6.51 shows a simple a potentiometer circuit for measuring a sma...

    Text Solution

    |

  3. A car has a fresh storage battery of emf 12 V and internal resistance ...

    Text Solution

    |

  4. If the balance point is obtained at the 35th cm in a metre bridge the ...

    Text Solution

    |

  5. The equivalent resistance across the terminals of source of e.m.f. 24 ...

    Text Solution

    |

  6. In the circuit shown in figure, switch S is initially closed and S i...

    Text Solution

    |

  7. The figure here shows a portion of a circuit. What are the magnitude a...

    Text Solution

    |

  8. A carbon resistor has colour strips as violet, yellow brown and golden...

    Text Solution

    |

  9. A voltmeter of resistance 1000 Omega is connected across a resistance ...

    Text Solution

    |

  10. A beam contains 2 xx 10^(8) doubly charged positive ions per cubic cen...

    Text Solution

    |

  11. In the circuit shown, the reading of ammeter when switch S is open ...

    Text Solution

    |

  12. In the circuit as shown in figure the

    Text Solution

    |

  13. In figure shows a rectangular block with dimensions x , 2 x and 4 x ....

    Text Solution

    |

  14. A battery is connected to a uniform resistance wire AB and B is eart...

    Text Solution

    |

  15. A cylindrical metal wire of length l and cross sections area S , has...

    Text Solution

    |

  16. A potential divider is used to give outputs of 4 V and 8 V from a 12 V...

    Text Solution

    |

  17. Find equivalent resistance between A and B

    Text Solution

    |

  18. Following figures show four situations in which positive and negative ...

    Text Solution

    |

  19. A and B are two square plates of same metal and same thickness but len...

    Text Solution

    |

  20. A moving coil galvanometer is converted into an ammeter reads upto 0.0...

    Text Solution

    |

  21. Two conductors are made of the same material and have the same length....

    Text Solution

    |