Home
Class 12
PHYSICS
In given figure, the potentiometer wire ...

In given figure, the potentiometer wire AB has a resistance of `5 Omega` and length 10 m . The balancing length AM for the emf of 0.4 V is

A

`0.4`m

B

4 m

C

`0.8` m

D

8 m

Text Solution

Verified by Experts

The correct Answer is:
D
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

In the givenn figure AB is a potentiometer wire of length 10 m and resistance 1Omega with key K open the balancing length is 5.5 m. however on closing key K the balancing length reduces to 5m. The initial resistance of the cell E_(1) is

In figure AB is a potentiometer wire of length 10 m and resistance 1Omega . The balancing length for 2V potential drop is 18 m. The e.m.f. of the battery E is

In figure, AB is a potentiometer wire, length 10 m and resistance 2 Omega with open the balancing length is 5.5 m. However, on closing key K the balancing length reduces to 5 m. The initial resistance of the cell E_(1) is

In the figure shown wire AB has a length of 100 cm and resistance 8Omega . Find the balance point length l .

A cell of e.m.f. 2 V and negligible internal resistance is connected to a potentiometer wire of resistance 10 Omega and length 4 m. The potential difference per unit length (potential gradient ) of the wire is

In an experiment to find the internal resistance of a cell by a potentiometer, a balance was obtained for 50 cm length of the potentiometer wire, with a cell of e.m.f. 2V. When the cell was shunted by a resistance of 2 Omega , the balancing length of the potentiometer wire was 40 cm. What was the internal resistance of the cell ?

Calculate the value of unknown potential V for the given potentiometer circuit .The total length 400 cm of potentiometer wire has a resistance of 10 Omega and the balance point in obtained at a length of 240 cm

A cell of e.m.f. 1.2 V is balanced by 150 cm of potentiometer wire. When the cell is shunted by a resistance of 4 Omega , the balancing length is reduced by 30 cm. What is the internal resistance of the cell ?

A potentiometer wire has resistance of per unit length of 0.1Omega//m . A cell of e.m.f. 1.5V balances against 300cm length of the wire. Find the current in the potentiometer wire.

DC PANDEY-CURRENT ELECTRICITY-Taking it together
  1. The potential difference in volt across the resistance R(3) in the cir...

    Text Solution

    |

  2. In the given circuit, the voltmeter records 5 V. The resistance of the...

    Text Solution

    |

  3. In given figure, the potentiometer wire AB has a resistance of 5 Omeg...

    Text Solution

    |

  4. In the circuit shown here, the readings of the ammeter and voltmeter a...

    Text Solution

    |

  5. If each of the resistance in the network in figure R, the equivalent ...

    Text Solution

    |

  6. Find the equivalent resistance across AB :

    Text Solution

    |

  7. The equivalent resistance between P and Q in the figure is approximate...

    Text Solution

    |

  8. In the given network of resistances, the effective resistance between ...

    Text Solution

    |

  9. A source of e.m.f. E = 15V and having negligible internal resistance i...

    Text Solution

    |

  10. The effective resistance between points A and C for the network shown ...

    Text Solution

    |

  11. Three resistances 5Omega, 5Omega and 6Omega are connected as shown in ...

    Text Solution

    |

  12. A potentiometer circuit is setup as shown. The potential gradient acro...

    Text Solution

    |

  13. An electric immersion heater of 1.08 kW is immersed in water. After it...

    Text Solution

    |

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

    Text Solution

    |

  15. B(1), B2 and B3 are the three identical bulbs connected to a battery o...

    Text Solution

    |

  16. The scale of a galvanometer of resistance 100 ohms contains 25 divisio...

    Text Solution

    |

  17. Three electric bulbs of 200 W, 200 W and 400 W are connected as shown ...

    Text Solution

    |

  18. Two electric bulbs rated 50 W and 100 W are glowing at full powr, when...

    Text Solution

    |

  19. The equivalent resistance between point A and B of an infinite network...

    Text Solution

    |

  20. In the given figure, the current through the 20 V battery is

    Text Solution

    |