Home
Class 12
PHYSICS
For a series LCR circuit the power loss ...

For a series LCR circuit the power loss at resonance is : -

A

zero

B

1

C

`1//2`

D

`1//2 ohm`

Text Solution

Verified by Experts

The correct Answer is:
B

At resonance `x_(L)=x_(C)`
So, `z=R rArr cosphi=1`
Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENT

    RESONANCE ENGLISH|Exercise Exercise -2 Part-1|14 Videos
  • ALTERNATING CURRENT

    RESONANCE ENGLISH|Exercise Exercise -2 Part-2|6 Videos
  • ALTERNATING CURRENT

    RESONANCE ENGLISH|Exercise HIGH LEVEL PROBLEMS|11 Videos
  • ATOMIC PHYSICS

    RESONANCE ENGLISH|Exercise Advanved level problems|17 Videos

Similar Questions

Explore conceptually related problems

For a series L C R circuit, the power loss at resonance is

For a series L C R circuit, the power loss at resonance is

A series L-C-R circuit is operated at resonance . Then

In series LCR circuit at resonance

Power factor in series LCR circuit at reasonance is

Assertion: At resonance, power factor of series L-C-R circuit is zero. Reason: At resonance, current function and voltage functions are in same phase.

The value of power factor coso in series LCR circuit at resonance is

The value of current in two series LCR circuits at resonance is same, then

In a series LCR circuit, the frequency of the source is more than resonance frequency. The current in the circuit leads the voltage in phases(True/false).

For which set of values of X_(L), X_(C) and R , a series LCR circuit will be in resonance ?

RESONANCE ENGLISH-ALTERNATING CURRENT-Exercise -1 Part-1
  1. An alternating voltage E=200sqrt(2)sin(100t) is connected to a 1 micro...

    Text Solution

    |

  2. When 100 V DC is applied across a solenoid, a steady current of 1 A fl...

    Text Solution

    |

  3. In an L-C-R circuit the AC voltage across R, L and C comes out as 10 V...

    Text Solution

    |

  4. In the series L-C-R circuit , the voltmeter and ammeter readings are

    Text Solution

    |

  5. For a series LCR circuit the power loss at resonance is : -

    Text Solution

    |

  6. A series LCR circuit containing a resistance of 120 ohm has angular re...

    Text Solution

    |

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

    Text Solution

    |

  8. An inductance L , a capacitor of 20muF and a resistor of 10Omega are c...

    Text Solution

    |

  9. A resistor R, an inductor L, a capacitor C and voltmeters V(1),V(2) an...

    Text Solution

    |

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

    Text Solution

    |

  11. A trensformer is used to light 140 W, 24 V lamp from a 240 V ac mains...

    Text Solution

    |

  12. In a step-up transformer the voltage in the primary is 220 V and the c...

    Text Solution

    |

  13. The core of a transformer is laminated to reduce

    Text Solution

    |

  14. A capacitor is a perfect insulator for

    Text Solution

    |

  15. A choke coil has

    Text Solution

    |

  16. A choke coil is preferred to a rheostate in AC circuit as

    Text Solution

    |

  17. With increase in frequency of an AC supply, the inductive reactance:

    Text Solution

    |

  18. With increase in frequency of an AC supply, the capacitive reactance:

    Text Solution

    |

  19. An AC ammeter is used to measure current is a circuit . When a given d...

    Text Solution

    |

  20. In an a.c. circuit consisting of resistance R and inductance L, the vo...

    Text Solution

    |