Home
Class 11
PHYSICS
Find out the potential of the junction S...

Find out the potential of the junction S (in volts) if all the dark wires are of resistacne R and light wires have zero resistance.

A

5

B

4

C

3

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
A

`(v-7)/R+(v-4)/R+(v-6)/R+(v-3)/R=0`
4v-20=0
v=5v.
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

In the given electrical circuit, the potential difference between point A and B is (assume the battery is ideal and the conducting wires have almost zero resistance):

In the circuit shown in figure, all wires have equal resistance r . Find the equivalent resistance between A and B

Two copper wires have equal length but the thickness of one is twice that of the other. If the resistance of the thin wire is 10 Omega , find the resistance of the thick wire.

A standerd cell emf 1.08 V is balance by the potential difference across 91 cm of a meter long wire applied by a cell of emf 2 V through a series resistor of resistance 2 Omega . The internal resistance of the cell is zero. Find the resistance per unit length of the potentiometer wire.

Zero resistance wire, Energy analysis of resistors and bulbs

Two wires A and B of the same material have their lengths in the ratio 5: 3 and diameter in the radius 2:3 . If the resistance of wire A is 15 Omega . find the resistance of wire B

There are two wires A and B of same mass and of the same material. The diameter of wire A is one-third the diameter of wire B. If the resistance of wire A is 30 Omega , find the resistance of wire B.

RESONANCE-PART TEST 5-Exercise
  1. Two concentric conducting thin shells of radius R and 2 R carry charge...

    Text Solution

    |

  2. A uniformly charged non-conducting spherical shell is given +q charge ...

    Text Solution

    |

  3. Find out the potential of the junction S (in volts) if all the dark wi...

    Text Solution

    |

  4. In the figure shown R = 100 Omega L = (2)/(pi) H and C = (8)/(pi) mu F...

    Text Solution

    |

  5. A uniform field is exists in the region directed away from the page. A...

    Text Solution

    |

  6. When the number of turns in a coil is doubled without any change in th...

    Text Solution

    |

  7. The potential difference across 8 ohm resistance is 48 volt as shownin...

    Text Solution

    |

  8. In the given circuit, in steady state we may say: (capacitors are init...

    Text Solution

    |

  9. Two circular rings of identical radii and resistance of 36Omega each a...

    Text Solution

    |

  10. At distance 'r' from a point charge, the ratio (U)/(V^(2)) (where 'U' ...

    Text Solution

    |

  11. A graph between current and time during charging of a capacitor by a b...

    Text Solution

    |

  12. An electron passes between two parallel plate of a capacitor as shown ...

    Text Solution

    |

  13. Three distinct current carrying wires intersect a finite rectangular p...

    Text Solution

    |

  14. An alternating EMF of frequency (1)/(2pi sqrt(LC)) is applied to a ser...

    Text Solution

    |

  15. In an AC circuit, the power factor

    Text Solution

    |

  16. The instantaneous potential difference between points.

    Text Solution

    |

  17. A parallel plate capacitor is charged and the charging battery is then...

    Text Solution

    |

  18. The linear charge density on a ring of radius R is lambda=lambda0 sin ...

    Text Solution

    |

  19. Two small spheres of masses M(1)and M(2) are suspended by weightless i...

    Text Solution

    |

  20. Assertion:A point charge q is placed near an arbitrary shaped solid co...

    Text Solution

    |