Home
Class 12
PHYSICS
In a Wheatstone's bridge, three resistan...

In a Wheatstone's bridge, three resistances P,Q and R connected in the three arms and the fourth arm is formed by two resistances `S_1 and S_2` connected in parallel. The condition for the bridge to be balanced will be

A

`(P)/(Q)=(2R)/(S_(1)+S_(2))`

B

`(P)/(Q)=(R(S_(1)+S_(2)))/(S_(1)S_(2))`

C

`(P)/(Q)=(R(S_(1)+S_(2)))/(2S_(1)S_(2))`

D

`(P)/(Q)=(R)/(S_(1)+S_2)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    MOTION|Exercise EXERCISE -4 (Level -II)|25 Videos

  • CURRENT ELECTRICITY

    MOTION|Exercise EXERCISE -3 (Level -II) SECTION F- Electrical Instrument + Exp. Verifying ohm s law & Specific Resistance Using Meter Brige & post Office + Potentiometer (EMF & Int Res.)|3 Videos

  • CONSTRAINED MOTION

    MOTION|Exercise EXAMPLES|12 Videos

  • ELASTICITY

    MOTION|Exercise EXERCISE -3|60 Videos

Similar Questions

Explore conceptually related problems

In a Wheatstone bridge, three resistance, P, Q and R are connected in the three arms and fourth arm is formed by two resistance s_(1) and s_(2) connected in parallel. The condition for the bridge to be balanced for ratio ((p)/(Q)) is (given R=10Omega, S_(1)=6Omega, S_(2)=3Omega )

In a Wheatstone bridge resistance connected the bridge is balanced , when the resistance are in the ratio

If resistors of resistance R_(1) and R_(2) are connected in parallel,then resultant resistance is "

In a wheatstone bridge the four arms have each resistance of 50 ohm.The galvanometer current is "

The effective resistance of three equal resistances, each of resistance r, connected in parallel, is

MOTION-CURRENT ELECTRICITY-EXERCISE -4 (Level -I)
  1. An electric bulb is rated 220 volt - 100 watt. The power consumed by i...

    Text Solution

    |

  2. The resistance of a bulb filmanet is 100Omega at a temperature of 100^...

    Text Solution

    |

  3. In a Wheatstone's bridge, three resistances P,Q and R connected in the...

    Text Solution

    |

  4. The Kirchhoff's first law (Sigmai = 0) and second law (SigmaiR = Sigma...

    Text Solution

    |

  5. The current I drawn from the 5V source will be

    Text Solution

    |

  6. The resistance of a wire is 5 Omega at 50^@C and 6 Omega at 100^@C . T...

    Text Solution

    |

  7. A material 'B' has twice the specific resistance of 'A'. A circular wi...

    Text Solution

    |

  8. Shown in the figure below is a meter- bridge set up will null deflecti...

    Text Solution

    |

  9. A 5 V battery with internal resistance 2Omega and a 2V battery with i...

    Text Solution

    |

  10. Statement I : The temperature dependence of resistance is usally given...

    Text Solution

    |

  11. Two conductors have the same resistance at 0^@C but their temperature ...

    Text Solution

    |

  12. In the circuit shown below, the key K is closed at t =0. The current t...

    Text Solution

    |

  13. If 400 Omega of resistance is made by adding four 100 Omega resistance...

    Text Solution

    |

  14. The current in the primary circuit of a potentiometer is 0.2 A. The sp...

    Text Solution

    |

  15. If a copper wire is stretched to make it 0.1% longer wha is the percen...

    Text Solution

    |

  16. Two electic bulbs marked 25 W -220 V and 100 W - 220 V are connected i...

    Text Solution

    |

  17. Resistance of a given wire is obtained by mea suring the current flowi...

    Text Solution

    |

  18. The supply voltage to room is 120 V. The resistance of the lead wires ...

    Text Solution

    |

  19. Assertion : Higher the range, greater is the resistance of ammeter. ...

    Text Solution

    |

  20. In a large building, there are 15 bulbs of 40 W, 5 bulbs of 100 W, 5 f...

    Text Solution

    |