Home
Class 12
PHYSICS
two resistors R and 2R are connected in ...

two resistors R and 2R are connected in series in an electric circuit. The thermal energy developed in R and 2R are in the ratio

A

`1:2`

B

`2:1`

C

`1:4`

D

`4:1`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    DC PANDEY ENGLISH|Exercise Taking it together|142 Videos
  • CURRENT ELECTRICITY

    DC PANDEY ENGLISH|Exercise B. Assertion and reason|18 Videos
  • CURRENT ELECTRICITY

    DC PANDEY ENGLISH|Exercise Example|65 Videos
  • COMMUNICATION SYSTEM

    DC PANDEY ENGLISH|Exercise Subjective|11 Videos
  • ELECTROMAGNETIC INDUCTION

    DC PANDEY ENGLISH|Exercise Medical entrances gallery|25 Videos

Similar Questions

Explore conceptually related problems

Two resistances R and 2R are connected in parallel in an electric circuit. The thermal energy developed in R and 2R are in the ratio

In the circuit diagram,heat produces in R, 2R and 1.5 R are in the ratio of

When two resistances R_1 and R_2 are connected in series , they consume 12 W powers . When they are connected in parallel , they consume 50 W powers . What is the ratio of the powers of R_1 and R_2 ?

In L-C-R series circuit

What is the ratio of heat generated in R and 2R

Two unequal resistances R_1 and R_2 ae connected across two identical batteries of emf epsilon and internal resistance r (figure) . Can the thermal energies developed in R_1 and R_2 be equal in a given time. If yes, what will be the condition? (Figure Question)

A parallel combination of an 8 Omega resistor and an unknown resistor R is connected in series with a 16 Omega resistor and a battery. This circuit is then disassembled, and the three resistors are then connected in series with each other oand the same battery. in both arrangements, the current through the 8 Omega resistor is the same. What is the unknown resistance R?

In the circuit shown the average power developed in the resistor R_(1) is

Two resistors R_(1) = 400 Omega and R_(2) = 20 Omega are connected in parallel to a battery. If heating power developed in R_(1) is 25. W. find the heating power developed in R_(2) .

When resistors R_(1) and R_(2) are connected in a parallel electric circuit, the total resistance is (1)/((1)/(R_(1))+(1)/(R_(2))) . This fraction is equivalent to

DC PANDEY ENGLISH-CURRENT ELECTRICITY-Check point
  1. A current of 2 A flows in a system of conductor as shown. The potentia...

    Text Solution

    |

  2. How much work is required to carry a 6muC charge from the negative ter...

    Text Solution

    |

  3. two resistors R and 2R are connected in series in an electric circuit....

    Text Solution

    |

  4. The resistor of resistance ' R ' is connected to 25 V supply and heat ...

    Text Solution

    |

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

    Text Solution

    |

  6. If R(1) and R(2) are respectively the filament resistances of a 200 wa...

    Text Solution

    |

  7. Two electric bulbs have tungsten filament of same length. If one of t...

    Text Solution

    |

  8. A resistor of resistance R is connected to an ideal battery. If the va...

    Text Solution

    |

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

    Text Solution

    |

  10. If in the circuit shown in Fig.7.55, power dissipation is 150 W , then...

    Text Solution

    |

  11. A wire when connected to 220V mains sapply power dissipation P(1) Now ...

    Text Solution

    |

  12. Two electric bulbs one, if 200 V-40 W and other 200 V-100 W are connec...

    Text Solution

    |

  13. One kilowatt hour is equal to

    Text Solution

    |

  14. 3 identical bulbs are connected in series and these together dissipate...

    Text Solution

    |

  15. Two bulbs are working in parallel order. Bulb A is brighter than bulb ...

    Text Solution

    |

  16. Electric bulb 50 W - 100 V glowing at full power are to be used in par...

    Text Solution

    |

  17. Some electric bulbs are connected in series across a 220 V supply in a...

    Text Solution

    |

  18. In the circuit shown, A and V are ideal ammeter and voltmeter respecti...

    Text Solution

    |

  19. The net resistance of a volmeter should be large to ensure that

    Text Solution

    |

  20. Two galvanometers A and B require 3 mA and 6 mA respectively, to produ...

    Text Solution

    |