Home
Class 12
PHYSICS
A resistor R(1) dissipates the power P w...

A resistor `R_(1)` dissipates the power `P` when connected to a certain generator. If the resistor `R_(2)` is put in series with `R_(1)`, the power dissipated by `R_(1)`

A

Decreases

B

Increases

C

Remains the same

D

Any of the above depending upon the relative values of `R_(1)` and `R_(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
In series, `P prop 1/R`
when `R uarr P darr`
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

A resistor R_(1) consumes electrical power P_(1) when connected to an emf epsilon . When resistor R_(2) is connected to the same emf , it consumes electrical power P_(2) . In terms of P_(1) and P_(2) , what is the total electrical power consumed when they are both connected to this emf source (a) in parallel (b) in series

If the current through a resistor in a circuit increases by 3%, the power dissipated by the resistor

A resistor of resistance R is connected to an ideal battery. If the value of R is decreased,the power dissipated in the resistor will

Five equal resistors when connected in series dissipated 5 W power. If they are connected in paralle, the power dissipated will be

In the following circuit, the 1Omega resistor dissipates power P. If the resistor is replaced by 9Omega , the power dissipated in it is

A capacitors C_1 is charged to a potential V and connected to another capacitor in seris with a resistor R as shown. It is observed that heat H_1 is dissipated across resistance R , tilll the circuit reaches steady state. Same process is repeated using resistance of 2R . If H_2 is heat dissipated in this case then

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

In the circuit shown ,the thermal power dissipated in R_(1) is P. The thermal power dissipated in R_(2) is .

ERRORLESS-CURRENT ELECTRICITY-NCERT BASED QUESTIONS (HEATING EFFECT OF CURRENT)
  1. An electric motor operator on 15 V supply, draws a current of 5 A and ...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  8. When two resistances R1 and R2 are connected in series , they consume...

    Text Solution

    |

  9. Three equal resistor connected in series across a source of enf toget...

    Text Solution

    |

  10. Two electric bulbs marked 40W, 220V and 60W, 220V when connected in se...

    Text Solution

    |

  11. A 5^(@)C rise in the temperature is observed in a conductor by passing...

    Text Solution

    |

  12. A 12 V lead accumulator is being charged using 24 V supply with an ext...

    Text Solution

    |

  13. A coil takes 15 min to boil a certain amount of water, another coil ta...

    Text Solution

    |

  14. An electric kettle has two heating coils. When one coil is used, water...

    Text Solution

    |

  15. An immersion heater is rated 836 watt . It should heat 1 litre of wate...

    Text Solution

    |

  16. A wire of length L and 3 identical cells of negligible internal resist...

    Text Solution

    |

  17. A coil of wire of resistance 50 Omega is embedded in a block of ice. I...

    Text Solution

    |

  18. Flash light equipped with a new set of batteries, produces bright whit...

    Text Solution

    |

  19. The material of fuse wire should should have

    Text Solution

    |

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

    Text Solution

    |