Home
Class 12
PHYSICS
An electric bulb is designed to draw P(...

An electric bulb is designed to draw `P_(0)` power at `V_(0)` voltage. If the voltage is `V`, it drawas power. Then

A

`P = ((V_0)/(V))P_(0)`

B

`P = ((V)/(V_0))P_(0)`

C

`P = ((V)/(V_0))^(2)P_(0)`

D

`P = ((V_0)/(V))^(2)P_(0)`

Text Solution

Verified by Experts

The correct Answer is:
C

`R_(B) = (V_0^2)/(P_0)`
`P = (V^2)/(R_B) = ((V)/(V_0))^(2)P_(0)`.
Promotional Banner

Topper's Solved these Questions

  • THERMAL AND ELECTRIC EFFECT oF CURRENT

    CP SINGH|Exercise Exercises|101 Videos
  • SEMICONDUCTORS

    CP SINGH|Exercise Exercises|140 Videos
  • WAVE NATURE OF LIGHT

    CP SINGH|Exercise EXERCISES|140 Videos

Similar Questions

Explore conceptually related problems

An electric bulb is connected to a 220V power supply line. If the bulb draws a current of 0.5A, calculate the power of the bulb.

n identical light bulbs, each designed to draw P power from a certain voltage supply , are joined in series across that supply. The total power which they will draw is

n identical bulbs, each designed to draw a power p from a certain voltage supply, are joined in series across that supply. The total power which they will draw is

Two electric bulbs, each designed to operate with a power of 500W in 220V line, are in series with a 100 V line. What will be the power generated by each bulb?

The voltage across an electric bulb is decreased by 2% . Assuming that the resistance of the filament remains same, the power consumed will

An electric heating element consumes 300W when connected to a 100V line. If the line voltage becomes 150V, the power consumed will be-

An electric bulbs draws 1.2 A current at 6.0 V . Find the resistance of the bulb.

When electric bulbs of same power, but different marked voltage are connected in series across the power line, their brightness will be :

Define electric power. Derive an expression for power in terms of current and resistance. An electric bulb is connected to a 200 V generator. The current is 0.5 A. What is the power of the bulb?

CP SINGH-THERMAL AND ELECTRIC EFFECT oF CURRENT-Exercises
  1. Ten 50W bulbs are operated for 10 hours per day. The energy consumed i...

    Text Solution

    |

  2. An electric bulb rated for 500 W at 100 V is used in a circuit having ...

    Text Solution

    |

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

    Text Solution

    |

  4. Two electric bulbs rated 25 W , 220 V and 100 W , 220 V are connected...

    Text Solution

    |

  5. A 100W bulb and a 25W bulb are desigened for the same voltage. They ha...

    Text Solution

    |

  6. Two electric bulbs, one of 200V, 40W, and the othere 220V, 100W are co...

    Text Solution

    |

  7. A 200W and a 100W , both meant for operation a t 220V are connected to...

    Text Solution

    |

  8. Two bulbs one of 60W and the other of 100W , are connected in series a...

    Text Solution

    |

  9. Two bulb one of 60W and the other of 100W , are connected in a house w...

    Text Solution

    |

  10. A 25W-120V bulb and a 100W-120V bulb are connected in series across 12...

    Text Solution

    |

  11. If two bulbs of 25 W and 100 W rated at 220 V are connected in series ...

    Text Solution

    |

  12. n identical light bulbs, each designed to draw P power from a certain ...

    Text Solution

    |

  13. Two tungsten lamps A and B of resistances R(1) and R(2) respectively a...

    Text Solution

    |

  14. These are two electric bulbs A and B rated 50W-100V, 100W-100V respec...

    Text Solution

    |

  15. A standard 50W electirc bulb in series with a room heater is connected...

    Text Solution

    |

  16. Two electric bulbs A and B are designed for the same voltage. Their po...

    Text Solution

    |

  17. A series circuit consists of three identical lamps connected to a batt...

    Text Solution

    |

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

    Text Solution

    |

  19. A 100 W bulb B1, and two 60 W bulbs B2 and B3 are connected to a 250 ...

    Text Solution

    |

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

    Text Solution

    |