Home
Class 12
PHYSICS
A resistance is made by connecting two w...

A resistance is made by connecting two wires (series) of same material of radii 2 mm and 5 mm and length 8cm and 5 cm. A potential difference of 22V is applied to them. The potential difference on the longer wre is

A

15 V

B

18 V

C

16 V

D

20 V

Text Solution

Verified by Experts

The correct Answer is:
D
Apply ohm's law
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    NARAYNA|Exercise Level 2 H.W|45 Videos

  • CURRENT ELECTRICITY

    NARAYNA|Exercise Level 3|46 Videos

  • CURRENT ELECTRICITY

    NARAYNA|Exercise Level 1 H.W|63 Videos

  • COMMUNICATION SYSTEM

    NARAYNA|Exercise Level-II(H.W)|25 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    NARAYNA|Exercise ASSERTION AND REASON|15 Videos

Similar Questions

Explore conceptually related problems

Two plates are 2cm apart, a potential difference of 10 volt is applied between them, the electric field between the plates is

Two capacitances of capacity C_(1) and C_(2) are connected in series and potential difference V is applied across it. Then the potential difference across C_(1) will be

An ideal battery of emf 2 V and a series resistance R are connected in the primary circuit of a potentiometer of length 1 m and resistance 5Omega The value of R, to give a potential difference of 5 m V across 10 cm of potentiometer wire is

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

A resistance of 6 ohms is connected in series with another resistance of 4 ohms. A potential difference of 20 volts is applied across the combination. Calculate the current through the circuit and potential difference across the 6 ohm resistance.

For a wire R/l = 1/2 and length of wire is l = 5 cm . If potential differrence of 1V is applied across it current through wire will be : (R = Resistance)

AN ideal battery of 4 V and resistance R are connected in series in the primary circuit of a potentiometer of length 1 m and the value of 5 ohm, to give a difference of 5mV across 10 cm of potentiometer wire , is :

A potentiometer consists of a wire of length 4 m and resistance 10 Omega . If is connected of cell of emf 2V . The potential difference per unit length of the wire will be

NARAYNA-CURRENT ELECTRICITY-Level 2 C.W
  1. In the following diagram ammeter reading is 4A, voltmeter reading is 2...

    Text Solution

    |

  2. Twelve resistors each of resistance 1 Omega are connected in the circu...

    Text Solution

    |

  3. A resistance is made by connecting two wires (series) of same material...

    Text Solution

    |

  4. A 220 V and 800 W electric kettle and three 220 V and 100 W bulbs are ...

    Text Solution

    |

  5. What is the equivalent resistance of the circuit

    Text Solution

    |

  6. The temperature coefficient of resistance of platinum is alpha=3.92xx1...

    Text Solution

    |

  7. Four identical resistance are joined as shown in fig. the equivalent r...

    Text Solution

    |

  8. If the galvanometer reading is zero in the given circuit, the current ...

    Text Solution

    |

  9. The effective resistance between A and B is the given circuit is

    Text Solution

    |

  10. The equivalent resistance between points A and B of an infinite networ...

    Text Solution

    |

  11. Equivalent resistance across A and B in the given circuit is

    Text Solution

    |

  12. Two resistance of 400 Omega and 800 Omega are connected in series with...

    Text Solution

    |

  13. Copper and carbon wires are connected in series and the combined resis...

    Text Solution

    |

  14. The three resistance of equal value are arranged in the different comb...

    Text Solution

    |

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

    Text Solution

    |

  16. In the circuit shown, the current in the 1Omega resistor is :

    Text Solution

    |

  17. The temperature dependence of resistance of Cu and undoped Si in the t...

    Text Solution

    |

  18. Two wires A and B with lengths in the ratio of 3:1 diameters in the ra...

    Text Solution

    |

  19. An electric heater operating at 220 volts boils 5 litre of water in 5 ...

    Text Solution

    |

  20. Three electric bulbs of 40 W, 60 W and 100 W have the tungsten wire of...

    Text Solution

    |