Home
Class 12
PHYSICS
What is the ratio of heat generated in R...

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

A

`2:1`

B

`1:2`

C

`4:1`

D

`1:4`

Text Solution

Verified by Experts

The correct Answer is:
A
`H prop 1/R rArr H_(1)/H_(2) = (2R)/R = 2:1`
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    ERRORLESS|Exercise PAST YEARS QUESTIONS |76 Videos

  • CURRENT ELECTRICITY

    ERRORLESS|Exercise ASSERTION AND REASON|26 Videos

  • CURRENT ELECTRICITY

    ERRORLESS|Exercise NCERT BASED QUESTIONS (DIFFERENT MEASURING INSTRUMENTS) |74 Videos

  • ATOMIC AND NUCLEAR PHYSICS

    ERRORLESS|Exercise Assertion and Reason|23 Videos

  • ELECTROMAGNETIC INDUCTION

    ERRORLESS|Exercise ASSERTION & REASON|20 Videos

Similar Questions

Explore conceptually related problems

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

Two wires having resistance R and 2 R are connected in parallel, the ratio of heat generated in 2 R and R is

Two wires with resistances R and 2 R are connected in parallel, the ratio of heat generated in 2 R and R is

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 ?

If two wires having resistance R and 2 R . Both joined in series and in parallel then ratio of heat generated in this situation, applying the same voltage,

The radii of two planets are R and 2R respectively and their densities p and rho//2 respectively, What is the ratio of acceleration due to gravity at their surfaces ?

ERRORLESS-CURRENT ELECTRICITY-NCERT BASED QUESTIONS (HEATING EFFECT OF CURRENT)
  1. A 5.0 amp current is setup in an external circuit by a 6.0 volt storag...

    Text Solution

    |

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

    Text Solution

    |

  3. What is the ratio of heat generated in R and 2R-

    Text Solution

    |

  4. The electric current passes through a metallic wire produces heat beca...

    Text Solution

    |

  5. If a 2 kW boiler is used everyday for 1 hour, then electrical energy c...

    Text Solution

    |

  6. A current of 2 A, passing through a conductor produces 80 J of heat in...

    Text Solution

    |

  7. A 4mu F conductor is charged to 400 volts and then its plates are join...

    Text Solution

    |

  8. If two wires having resistance R and 2 R . Both joined in series and i...

    Text Solution

    |

  9. In the following circuit, 5Omega resistor develops 45 J/s due to curre...

    Text Solution

    |

  10. A heater coil is cut into two parts of equal length and one of them is...

    Text Solution

    |

  11. A cell of e.m.f E is connected to a resistance R(1) for time t and the...

    Text Solution

    |

  12. Three electric bulbs with same voltage ratings of 110 volts but wattag...

    Text Solution

    |

  13. An electric lamp is marked 60 W , 230 V . The cost of a 1 kWh of energ...

    Text Solution

    |

  14. An electric motor operator on 15 V supply, draws a current of 5 A and ...

    Text Solution

    |

  15. A heater is designed to operate with a power of 1000W in a 100 V line....

    Text Solution

    |

  16. A resistor R(1) dissipates the power P when connected to a certain gen...

    Text Solution

    |

  17. Two identical heaters rated 220 V , 1000 W are paced in series with ea...

    Text Solution

    |

  18. Two bulbs of 100 W and 200 W working at 220 volt are joined in series ...

    Text Solution

    |

  19. Three electric bulbs of rating 60 W each are joined in series and then...

    Text Solution

    |

  20. Three electric bubls of 200W, 200 W and 400W are shown in figure. The ...

    Text Solution

    |