Home
Class 12
PHYSICS
The wires of two electric heaters are ma...

The wires of two electric heaters are made up of same material and have same value. On combining them firstly in series after in parallel with a 220V A.C. source, the ratio of heat dissipiated on them will be:-

A

`2:1`

B

`1:2`

C

`4:1`

D

`1:4`

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 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

Two wires made of same material have their electrical resistances in the ratio 1:4 if their lengths are in the ratio 1:2 , the ratio of their masses is

If electric bulbs having resistances in the ratio 2 : 3 are connected in parallel to a voltage sources of 220 V. The ratio of the power dissipated in them is

Two wires A and B are made of same material and are having same weights. The strain in A will be more when

Two wires A and B of same material and mass, have their lengths in the ratio 1:2. On connecting them, one at a time to the same source of emf, the rate of heat dissipation in B is found to be 50W. What is the rate of heat dissipation in A?

ALLEN-CURRENT ELECTRICITY-All Questions
  1. n identical bulbs, each designed to draw a power p from a certain volt...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  6. Two 220 V,100 W bulbs are connected first in series and then in parall...

    Text Solution

    |

  7. An electric kettle has tow heating coils. When one of the coils connec...

    Text Solution

    |

  8. Fuse wire is a wire of :

    Text Solution

    |

  9. When electric bulbs of same power, but different marked voltage are co...

    Text Solution

    |

  10. When three identical bulbs of 60 W, 200 V rating are connected in seri...

    Text Solution

    |

  11. In India electricity is supplied for domestic use at 220 V. It is supp...

    Text Solution

    |

  12. A heater coil connected to a supply of a 220 V is dissipating some pow...

    Text Solution

    |

  13. The thermo emf E of a thermocouple is found to vary wit temperature T ...

    Text Solution

    |

  14. Maximum number bulbs of 60 W that can be used in a 220V supply line p...

    Text Solution

    |

  15. A 5-A wire can withstand a maximum power of 1W in circuit. The resista...

    Text Solution

    |

  16. The temperature of inversion of a thermocouple is 620^(@)C and the neu...

    Text Solution

    |

  17. For ensuring dissipation of same energy in all three resistors (R(1), ...

    Text Solution

    |

  18. Power dissipated across the 8 Omega in the circuit shown here is 2 W. ...

    Text Solution

    |

  19. The electrochemical equivalent of a substance is numerically equal to ...

    Text Solution

    |

  20. The total power dissipated in watts in the circuit shown here is

    Text Solution

    |