Home
Class 12
PHYSICS
An electric bulb and a capacitor are con...

An electric bulb and a capacitor are connected in series with an `AC` source.On increasing the freqency of the source, the brightness of the bulb

A

Increase

B

Decreases

C

Remains unchanged

D

Sometimes increase and sometimes decreases

Text Solution

Verified by Experts

`X _(C) = (1)/(omega c)` will decrease if we increse frequency then z will decrease so current will increse & intensity will increase.
Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENT

    PHYSICS WALLAH|Exercise NEET PAST 5 YEARS QUESTIONS |8 Videos
  • ALTERNATING CURRENT

    PHYSICS WALLAH|Exercise NEET PAST 5 YEARS QUESTIONS |8 Videos
  • CURRENT ELECTRICITY

    PHYSICS WALLAH|Exercise NEET Past 5 Years Questions|23 Videos

Similar Questions

Explore conceptually related problems

A bulb and a conender are connected in series with an A.C source. On increasing the frequency of the source its brightness will

A bulb and a capacitor are in series with an AC source. On increasing frequency how will glow of the bulb change

An inductor, a resistor and a capacitor are joined in series with an AC source. As the frequency of the source is slightly increased from a very low value, the reactance

A bulb and a capacitor are connected in series to an a.c. source of varialbe frequency. How will the brightness of the bulb change on increasing the frequency of a.c. source ?

An air core coil and an electric bulb are connected in series with an AC source. If an iron rod is put in the coil, then the intensity of light of the bulb will

A bulb and a capacitor are connected in series to a source of alternating current. If its frequency is increased, while keeping the voltage of the source constant, then

Three bulbs of 40 W , 60 W and 100 W are connected in series with a 240 V source.

A coil and a bulb are connected in series with a dc source, a soft iron core is then ninserted in the coil. Then

PHYSICS WALLAH-ALTERNATING CURRENT -LEVEL - 2
  1. A coil of inductance 5.0 mH and negligible resistance is connected to ...

    Text Solution

    |

  2. A 100 volt AC source of angular frequency 500 rad/s is connected to a ...

    Text Solution

    |

  3. A condenser of 10muF and an inductor of 1.2H are connected in series w...

    Text Solution

    |

  4. In an ac circuit the potential differences across an inductance and re...

    Text Solution

    |

  5. A coll has an inductance of (2.2)/(pi)H and is joined m series with a ...

    Text Solution

    |

  6. A resistor and a capacitor are connected to an ac supply of 200 V, 50 ...

    Text Solution

    |

  7. The impedance of a series circuit consists of 3 ohm resistance and 4 o...

    Text Solution

    |

  8. An electric bulb and a capacitor are connected in series with an AC so...

    Text Solution

    |

  9. In an LCR series circuit the rms voltages across R L and C are found...

    Text Solution

    |

  10. In an LCR circuit, the capacitance is made one-fourth, when in resonan...

    Text Solution

    |

  11. A resistor R, an inductor L and a capacitor C are connected in series ...

    Text Solution

    |

  12. A power transformer (step up) with an 1:8 turns ratio has 60 Hz,120 V ...

    Text Solution

    |

  13. An alternating current is given by I = i1 cos omegat + i2 sin omegat...

    Text Solution

    |

  14. The value of current at half power point is-

    Text Solution

    |

  15. Expressions for emf and current in an A.C. ciruit E = 200 sin 314 t v...

    Text Solution

    |

  16. In a transformer, number of turns in the primary coil are 140 and that...

    Text Solution

    |

  17. In an oscillating LC circuit the maximum charge on the capacitor is Q....

    Text Solution

    |

  18. The self inductance of the motor of an electric fan is 10 H. In order ...

    Text Solution

    |

  19. A coil of resistance 300 Omega and inductance 1.0 henry is connected a...

    Text Solution

    |

  20. An AC source of variable frequency f is connected to an LCR series cir...

    Text Solution

    |