Home
Class 12
PHYSICS
A potentiometer wire AB having length L ...

A potentiometer wire AB having length L and resistance 12 r is joined to a cell D of emf `epsi//2` and internal resistance 3r is connected. The length AJ at which the galvanometer as shown in fig. Shows no deflection is :

Text Solution

Verified by Experts

The correct Answer is:
5L/9
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    RESONANCE ENGLISH|Exercise Exercise-1 (Part-2)|47 Videos
  • CURRENT ELECTRICITY

    RESONANCE ENGLISH|Exercise Exercise-1 (Part-3)|2 Videos
  • CURRENT ELECTRICITY

    RESONANCE ENGLISH|Exercise Solued miscellaneous Prolblems|8 Videos
  • COMMUNICATION SYSTEMS

    RESONANCE ENGLISH|Exercise Exercise 3|13 Videos
  • DAILY PRACTICE PROBLEM

    RESONANCE ENGLISH|Exercise DPP.No.71|1 Videos

Similar Questions

Explore conceptually related problems

In the figure, the potentiometer wire of length l = 100 cm and resistance 9 Omega is joined to a cell of emf cell of emf E_(2) = 5 V and internal resistance r_(2) = 2 V is connected as shown. The galvanometer is show no deflection when the length AC is

In the figure the potentiometer wire AB of length L and resistance 9 r is joined to the cell D of e.m.f epsilon and internal resistance r. The emf of cell C is epsilon/2 and its internal resistance is 2r.The galvanometer G will show on deflection when the length AJ is

The maximum power dissipated in an external resistance R, when connected to a cell of emf E and internal resistance r, will be

A potentiometer consists of a wire of length 4 m and resistance 10Omega . It is connected to a cell of emf 2V.The potential gradient of the wire is

The wire of potentiometer has resistance 4 Omega and length 1m. It is connected to a cell of e.m.f. 2V and internal resistance 1 Omega . The current flowing through the potentiometer wire is

A simple potentiometer circuit is shown in the figure. The internal resistance of 5 V battery is 0.6 Omega wire of length 4 m and resistance 0.5 Omega per meter. The length AB for which galvanometer shows zero deflection is

An accumulator of emf 2 V and negligible internal resistance is connected across a uniform wire of length 10 m and resistance 30 Omega The appropriate terminals of a cell of emf 1.5 V and internal resistance 1 Omega is connected to one end of the wire and the other terminal of the cell is connected through a sensitive galvanometer to a slider on the wire. What is the length of the wire that will be required to produce zero deflection of the galvanometer? How will the balancing length change? (a) When a coil of resistance 5Omega is placed in series with the accumulator. (b) The cell of 1.5 V is shunted with 5 Omega resistor?

For the potentiometer arrangement shown in the figure, length of wire AB is 100 cm and its resistance is 9 Omega . Find the length AC for which the galvanometer G will show zero deflection.

A potentiometer wire of length 10m and resistance 30 ohm is connected in series with a battery of emf 2.5V, internal resistance 5 ohm and external resistance R. If the fall of potential along the potentiometer wire is 50mV/m, the value of R is ohms is

A potentiometer wire of length 10 m and resistance 30 Omega is connected in series with a battery of emf 2.5 V , internal resistance 5 Omega and an external resistance R . If the fall of potential along the potentiometer wire is 50 mu V mm^(-1) , then the value of R is found to be 23 n Omega . What is n ?

RESONANCE ENGLISH-CURRENT ELECTRICITY-Exercise-1 (Part-1)
  1. Find the equivalent resistance of the circuit given in figure between ...

    Text Solution

    |

  2. An infinite ladder is constructed with 1(Omega)and 2(Omega)resistor as...

    Text Solution

    |

  3. As shown in figure a variable rheostat of 2kOmega is used to control t...

    Text Solution

    |

  4. ABCD is a square where each side is a uniform wire of resistance 1Omeg...

    Text Solution

    |

  5. Suppose you have three resistor of (20 Omega),(50 Omega)and (100 Omega...

    Text Solution

    |

  6. Three bulbs,each having a resistance of 180(Omega)are connected in par...

    Text Solution

    |

  7. Consider the circuit shown in figure.Find the current through the10(Om...

    Text Solution

    |

  8. Siix lead-acid type of secondary cells, each of emf 2.0 V and internal...

    Text Solution

    |

  9. In the figure each cell has an emf of 1.5 V and internal resistnce of ...

    Text Solution

    |

  10. In the circuit shown all live resistors have the same value 200 ohms a...

    Text Solution

    |

  11. Find the currents through the three resistors shown in Figure

    Text Solution

    |

  12. Find the value of i(1)//I(2)in figure if (a)R=0.1(Omega) (b)R=1(Omega)...

    Text Solution

    |

  13. A galvenometer has a resistance of 30 Omega, and a current of 2 mA is ...

    Text Solution

    |

  14. A voltmeter of resistances 400(Omega)is used to measure the potential ...

    Text Solution

    |

  15. An electrical circuit is shown in figure. Calculate the potential diff...

    Text Solution

    |

  16. A battery of emf 1.4 V and internal resistance 2 Omega is connected to...

    Text Solution

    |

  17. A potentiometer wire AB having length L and resistance 12 r is joined ...

    Text Solution

    |

  18. Figure 6.13 shows a 2.0 V potentiometer used for the determination of ...

    Text Solution

    |

  19. Figure 6.36 shows a potentiometer with a cell of emf 2.0 V and interna...

    Text Solution

    |

  20. Figure 6.32 shows a meter bridge in the (which is nothing but a partic...

    Text Solution

    |