Home
Class 12
PHYSICS
Assertion : Two 60 W bulbs are first con...

Assertion : Two 60 W bulbs are first connected in series and then in parallel with same battery. Total power produced in second case will become four times. Rated voltage is same for two bulbs.
Reason : In series total power produced will be 30 W and in parallel 120 W.

A

If both Assertion and Reason are true and Reason is the correct explanation of Assertion.

B

If both Assertion and Reason are true and Reason is not correct explanation of Assertion.

C

If Assertion is true but Reason is false.

D

If Assertion is false but Reason is true.

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    DC PANDEY|Exercise Match the columns|4 Videos
  • CURRENT ELECTRICITY

    DC PANDEY|Exercise Medical entrances gallery|97 Videos
  • CURRENT ELECTRICITY

    DC PANDEY|Exercise Taking it together|142 Videos
  • COMMUNICATION SYSTEM

    DC PANDEY|Exercise Subjective|11 Videos
  • ELECTROMAGNETIC INDUCTION

    DC PANDEY|Exercise Medical entrances gallery|25 Videos

Similar Questions

Explore conceptually related problems

4 bulbs marked 40 W , 250 V are connected in series with 250 V mains. The total power is

Two bulbs when connected in parallel to a source take 100 W each. The total power consumed when they are connected in series with the same source is

The Total resistance when connected in series in 9 Omega and when connected in parallel is 2 Omega The value of two resistance are

Ten 60 W, 220 V bulbs are connected in series to 220 V supply . Power consumed in the circuit is

Two bulbs when connected in parallel to a source take 60 W each, the power consumed, when they are connected in series with the same source is

Five equal risistors when connected in series dissipted 5 W power. If they are connected in parallel, the power dissipated will be

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:

Two 220 V,100 W bulbs are connected first in series and then in parallel. Each time the combination is connected to a 220 V AC supply line. The power drawn by the combination in each case respectively will be :

Two 220 volt, 200 W bulbs are connected first in series and then in parallel. Each time the combination is connected to 220 V. The ratio of power drawn by the combination in respective cases is

DC PANDEY-CURRENT ELECTRICITY-B. Assertion and reason
  1. Assertion : V = iR is Ohm's law. Reason : V - I graph is always a st...

    Text Solution

    |

  2. Assertion : Current versus potential difference (i-V) graph for a cond...

    Text Solution

    |

  3. Assertion : If a current flows through a wire of non-uniform cross-sec...

    Text Solution

    |

  4. Assertion : In our houses when we start switching on different light b...

    Text Solution

    |

  5. Assertion : If a current is flowing through a conducting wire of non-u...

    Text Solution

    |

  6. Assertion : Kilovol-ampere (kVA) and kilowatt-hour have the same dimen...

    Text Solution

    |

  7. Assertion : If by mistake, a voltmeter is connected in series, then ci...

    Text Solution

    |

  8. Assertion : Resistance of an ammeter is less than the resistance of a ...

    Text Solution

    |

  9. Assertion : A resistance wire is broken into four pices and all are co...

    Text Solution

    |

  10. Assertion : Potential difference across the terminals of a battery is ...

    Text Solution

    |

  11. Assertion : Inside a conductor, electrons have no motion in the absenc...

    Text Solution

    |

  12. Assertion : Current between two points in an electrical always flows f...

    Text Solution

    |

  13. Assertion : In case of potentiometer experiment, if emfs of known and ...

    Text Solution

    |

  14. Assertion : In potentiometer experiment, null point cannot be obtained...

    Text Solution

    |

  15. Assertion : In the circuit shown in figure, battery is ideal. If a res...

    Text Solution

    |

  16. Assertion : Two 60 W bulbs are first connected in series and then in p...

    Text Solution

    |

  17. Assertion : Two resistance wires shown in figure are of same material....

    Text Solution

    |

  18. Assertion : Two identical bulbs when connected across a battery, produ...

    Text Solution

    |