Home
Class 12
PHYSICS
Three resistance are joined together to ...

Three resistance are joined together to form a letter Y, as shown in figure. If the potentials of the terminals `A, B` and `C` are `6V, 3V` and `2V` respectively, then the potential of the point O will be

A

`4V`

B

`3V`

C

`2.5V`

D

`0V`

Text Solution

Verified by Experts

The correct Answer is:
B

Let `V_0=V`
Now, `I_(AO)+I_(BO)=I_(OC)`
`:. (6-V)/6+(3-V)/3=(V-2)/2`
solving this equation, we get
`V=3V`
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    DC PANDEY|Exercise OBJECTIVE_TYPE|1 Videos
  • CURRENT ELECTRICITY

    DC PANDEY|Exercise Level 1 Subjective|53 Videos
  • CURRENT ELECTRICITY

    DC PANDEY|Exercise Level 1 Assertion And Reason|11 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

A circuit has a section ABC if the potential at point A,B and C are V_(1) , V_(2) and V_(3) respectively , calculate the potential at point O

Standard electrode potential of three metals A,B and C are -1.5V,0.8V and -2.7V respectively. The reducing power of these of these metals will be :-

Three capacitors C_(1),C_(2) and C_(3) are connected as shown in, The potentials of P,Q , and R are V_(1),V_(2), and V_(3) , respectively. Find the potential V_(0) at the function O . .

As shown in figure, if the point C is earthed and the point A is given a potential of 2000 V, then the potential at point B will be :

Three uncharged capacitors of capacities C_(1),C_(2) and C_(3) are connected as shown in the figure to one another and the potentials V_(1),V_(2) and V_(3) respectively. Then the potential at O will be .

Shown a part of an electric circuit, The potentials at the points a,b,and c are 30V,12V,and 2V respectively.Find the currents through the three resistors.

For the network shown in figure, points A, B and C are at potentials of 70 V, zero and 10 V respectively

A network of resistance is constructed with R_1 and R_2 as shown in fig. The potential at the points 1,2,3 …., N are V_1, V_2,V_3,…,V_n, respectively, each having a potential k times smaller then the previous one. The ratio R_2//R_3 is

A network of resistance is constructed with R_1 and R_2 as shown in fig. The potential at the points 1,2,3 …., N are V_1, V_2,V_3,…,V_n, respectively, each having a potential k times smaller then the previous one. The ratio R_1//R_2 is

DC PANDEY-CURRENT ELECTRICITY-Level 1 Objective
  1. N identical current sources each of emf E and internal resistance r ar...

    Text Solution

    |

  2. A 2.0 V potentiometer is used to determine the internal resistance of ...

    Text Solution

    |

  3. Three resistance are joined together to form a letter Y, as shown in f...

    Text Solution

    |

  4. The drift velocity of free elecrons in a conductor is v, when a curren...

    Text Solution

    |

  5. A galvanometer is to be converted into an ammeter or voltmeter. In whi...

    Text Solution

    |

  6. In the given circuit current flowing through the resistance 20Omega is...

    Text Solution

    |

  7. An ammeter and a voltmeter are joined in sereis to a cell. Their readi...

    Text Solution

    |

  8. A resistor R has power of dissipation P with cell voltage E. The resis...

    Text Solution

    |

  9. In the circuit diagram shown in figure, a fuse bulb can cause all othe...

    Text Solution

    |

  10. Two batteries one of the emf 3V, internal resistance 1Omega and the ot...

    Text Solution

    |

  11. A part of a circuit is shown in figure. Here reading of ammeter is 5A ...

    Text Solution

    |

  12. A copper wire of resistance R is cut into ten parts of equal length. T...

    Text Solution

    |

  13. Two resistances are connected in two gaps of a meter bridge. The balan...

    Text Solution

    |

  14. In the given circuit, the voltmeter records 5 volt. The resistance of ...

    Text Solution

    |

  15. The wire of potentiometer has resistance 4Omega and length 1m. It is c...

    Text Solution

    |

  16. The potential difference between points A and B, in a section of a cir...

    Text Solution

    |

  17. Two identical batteries, each of emf 2V and internal resistance r=1Ome...

    Text Solution

    |

  18. For a cell, the terminal potential difference is 2.2 V, when circuit i...

    Text Solution

    |

  19. Potentiometer wire of length 1 m is connected in series with 490 Omega...

    Text Solution

    |

  20. Find the ratio of currents as measured by ammeter in two cases when th...

    Text Solution

    |