Home
Class 12
PHYSICS
Voltage and current in an AC circuit are...

Voltage and current in an AC circuit are given by V = 5sin(`100pi`t-`pi`/6) and I = 4sin(100`pi`t+`pi`/6)

A

Voltage leads the current by `30^(@)`

B

Current leads the voltage by `45^(@)`

C

Current leads the voltage by `15^(@)`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION & ALTERNATIVE CURRENT

    VMC MODULES ENGLISH|Exercise ENABLE|50 Videos
  • ELECTROMAGNETIC INDUCTION & ALTERNATIVE CURRENT

    VMC MODULES ENGLISH|Exercise EFFICIENT|49 Videos
  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    VMC MODULES ENGLISH|Exercise IN-CHAPTER EXERCISE-G|10 Videos
  • ELECTROSTATICS

    VMC MODULES ENGLISH|Exercise JEE Advanced (Archive)|89 Videos

Similar Questions

Explore conceptually related problems

Voltage and current in an ac circuit are given by V=5 sin (100 pi t-pi/6) and I=4 sin (100 pi t+pi/6)

The instantaneous values of current and voltage in an AC circuit are given by l = 6sin ( 100 pi t + pi / 4) V = 5sin ( 100 pi t - pi / 4 ), then

The instantaneous current and volatage of an AC circuit are given by i = 10 sin (314 t) A and V = 100 sin (314 t) V What is the power dissipation in the circuit?

In a circuit, the instantaneous values of alternating current and voltages in a circuit is given by I = (1)/(sqrt2) sin (100 pi t) A and E = (1)/(sqrt2) sin (100 pi t + (pi)/(3)) V . The average power in watts consumed in the circui is

In an AC circuit V and I are given by V = 100 sin 100t V and I = 100 sin (100t + pi//3) mA. The power dissipated in the circuit is

The current in an LCR circuit is given by I=20sin (100pi t+(pi)/(6))A . The voltage across the the inductance L of 0.1 H at t = 0 will be

The potential difference E and current I flowing through the ac circuit is given by E=5 cos (omega t -pi//6) V and I=10 sin (omega)t A . Find the average power dissipated in the circuit.

An alternating current in a circuit is given by l = 20 sin ( 100 pi t + 0.05pi ) A. The rms value and the frequency of current respectively are

When an alternating emf e = 310 sin (100pit) V is applied to a series LCR circuit, current flowing through the circuit can be given by i=5sin(100pit+pi//3)A . (1) What is the phase difference between the current and the emf ? (2) Calculate the average power consumed by the circuit.

The current and voltage functions in an AC circuit are i=100 sin 100 tmA, V=100sin(100t+pi/3)V The power disspitated in the circuit is

VMC MODULES ENGLISH-ELECTROMAGNETIC INDUCTION & ALTERNATIVE CURRENT -IMPECCABLE
  1. Voltage and current in an AC circuit are given by V = 5sin(100pit-pi/6...

    Text Solution

    |

  2. The turn ratio of a transformers is given as 2:3. If the current throu...

    Text Solution

    |

  3. A transformer with efficiency 80% works at 4 kW and 100 V. If the seco...

    Text Solution

    |

  4. In the induction coil, across secondary coil the output voltage is pra...

    Text Solution

    |

  5. The number o turns of primary and secondary coils of a transformer ar...

    Text Solution

    |

  6. If a transfomer of an audio amplifier has output impedance 8000Omega a...

    Text Solution

    |

  7. The coefficient of mutual inductance between the primary and secondar...

    Text Solution

    |

  8. Quantity that remains unchanged in a transformer is

    Text Solution

    |

  9. What is the peak value of the voltage of a 220V ac line?

    Text Solution

    |

  10. If reading of an ammeter is 10 A, the peak value of current is

    Text Solution

    |

  11. In an AC circuit, the impedance is sqrt3 times the reactance, then the...

    Text Solution

    |

  12. An alternating potential V = underset(o)(V) sin omegat is applied acro...

    Text Solution

    |

  13. An Ac voltage is represented by e=220 sin (100pi) t volt and is applie...

    Text Solution

    |

  14. If an AC produces same heat as that produced by a steady current of...

    Text Solution

    |

  15. The potential difference V and the current I flowing through an ins...

    Text Solution

    |

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

    Text Solution

    |

  17. Core of transformer is made up

    Text Solution

    |

  18. A transformer works on the principle of

    Text Solution

    |

  19. A transformer has an efficiency of 80%. It works at 4 kW and 100 V. If...

    Text Solution

    |

  20. In a step - down transformer, the number of turns in

    Text Solution

    |

  21. A step-up transformer operates on a 230 V line and supplies a current ...

    Text Solution

    |