Home
Class 12
PHYSICS
Two heater wires, made of the same mater...

Two heater wires, made of the same material and having the same length and the same radius, are first connected in series and then in parallel to a constant potential difference. If the rate of heat produced in the two cases are Hs and Hp respectively then `(Hs)/(Hp)` will be

A

`(1)/(2)`

B

2

C

`(1)/(4)`

D

4

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • CIRCULAR MOTION

    ALLEN|Exercise EXERCISE (J-A)|6 Videos
  • GEOMETRICAL OPTICS

    ALLEN|Exercise subjective|14 Videos

Similar Questions

Explore conceptually related problems

Two heating wires of equal length are first con nected in series and then in parallel to a constant voltage source. The rate of heat produced in the two cases is

Two conducting wires of the same material and of equal length and equal diameters are first connected in series and then in parallel in an electric circuit. The ratio of the heat produced in series and parallel combinations would be :

Two identical rods of same metal are first waleded in series and then in parallel are maintained at same temperature difference then the ratio of heats conducted in same time is .

Two wires A and B made of same material and having their lengths in the ratio 6:1 are connected in series The potential difference ascross the wire 3V and 2V respectively. If r_A and r_B are the radii of A and B respectively, then r_B/r_A is

Two wires of the same material and having lengths in the ratio of 2:3 are connected in series.The p.d.s across the wires are 4.2V and 3.6V respectively. ratio of their radii.

Two heating coils, one of fine wire and the other of thick wire of the same material and of the same length are connected in series and in parallel. Which of the following statement is correct ?

ALLEN-CURRENT ELECTRICITY-All Questions
  1. Two electric bulbs whose resistances are in the ratio of 1:2 are conne...

    Text Solution

    |

  2. A 60 watt bulb operates on 220 V supply. The current flowing through t...

    Text Solution

    |

  3. Two heater wires, made of the same material and having the same length...

    Text Solution

    |

  4. A, B, C are identical bulbs. How does the brightness of A and B change...

    Text Solution

    |

  5. How many calories of heat will be approximately developed in a 210 W e...

    Text Solution

    |

  6. The smallest temperature difference that can be measured with a combin...

    Text Solution

    |

  7. Two bulbs of (40W 200V) and (100W 200V). Then correct relation for the...

    Text Solution

    |

  8. A 100 W 200 V bulb is connected to a 160 V power supply. The power con...

    Text Solution

    |

  9. The EMF generated across a thermocouple with cold junction at 0^(@)C ,...

    Text Solution

    |

  10. Two electric bulbs (60 W and 100 W respectively) are connected in seri...

    Text Solution

    |

  11. An electric bulb is designed to draw P(0) power at V(0) voltage. If t...

    Text Solution

    |

  12. A battery supplies 150W and 196 W power to two resistance of 6Omega an...

    Text Solution

    |

  13. The temperature at which thermal electric power of a thermo couple bec...

    Text Solution

    |

  14. Two electric bulbs rated P(1) watt V volt and P(2) watt V, these are j...

    Text Solution

    |

  15. The coil of a 1 000W electric heater is cut into two equal parts. If t...

    Text Solution

    |

  16. n identical bulbs, each designed to draw a power p from a certain volt...

    Text Solution

    |

  17. If the temperatures on both ends of a conductors are different then th...

    Text Solution

    |

  18. The wires of two electric heaters are made up of same material and hav...

    Text Solution

    |

  19. The bulbs of 40W,100W and 200watt are connected in series with a volta...

    Text Solution

    |

  20. A fuse wire with radius 1 mm blows at 1.5 amp . The radius of the fuse...

    Text Solution

    |