Home
Class 12
PHYSICS
Three electric bulbs of rating 60 W each...

Three electric bulbs of rating 60 W each are joined in series and then connected to electric mains. The power consumed by these three bulbs will be

A

180 W

B

60 W

C

20 W

D

`(20/3)` W

Text Solution

Verified by Experts

The correct Answer is:
C
In series `P_(S) = P/n = 60/3 = 20 W`
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

When two electric bulbs of 40W and 60W are connected in parallel, then the:

Two identical electric lamps marked 500 W , 220 V are connected in series and then joined to a 110 V line. The power consumed by each lamp is

A 25W and 100W bulbs are joined in series and connected to the mains. Which bulb will glow brighter?

A 25W and 100W bulbs are joined in series and connected to the mains. Which bulb will glow brighter?

Two electric bulbs of 40 watt each are connected in series. The power consumed by the combination will be

A room heater is rated 500 W, 220V . (a) Find the resistance of its coil. (b) If the supply voltage drops to 200 V , what will be the power consumed? ( c) If an electric bulb rated 100 W, 220 V is connected in series with this heater, what will be the power consumed by the heater and by the bulb when the supply is at 220 V ?

If two bulbs, both of rated power 100 W at 220 V, are connected in series with a 220 V supply, the total power consumed by the bulbs will be:

A 100W and a 500W bulbs are joined in series and connected to the mains which bulb will glow brighter?

Two electric bulbs rated P_(1) watt and V volt, are connected in series, across V-volt supply. The total power consumed 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

    |