Home
Class 11
PHYSICS
The variation of the instantaneous curre...

The variation of the instantaneous current `(I)` and the instantaneous e.m.f `(E)` in a circuit is as shown in figure. Which of the following statement is correct?

A

the voltage lags behind the current by `pi//2`

B

The voltage leads the current by `pi//2`

C

The voltage and the current are in phase

D

The voltage leads the current by `pi`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

For the given circuit shown in figure which of the following statements is/are correct

For the circuit shown in figure, which of the following statements is true ?

In the circuit shown in the figure, which one of following statement is correct

Consider the circuit shown in the figure. Which of the following statements are correct ?

The induced e.m.f in a circuit

Find current (i) in circuit shown in figure.

What is the current ( i ) in the circuit as shown in figure

For the circuit shown in figure. The point F is grounded. Which of the following is wrong statement ?

Current I is being driven through a cell of emf E and internal resistance r as shown in the figure. Choose the following correct statements.

RESONANCE-ALTERNATING CURRENT-Exercise
  1. In an AC circuit, V and I are given by V=100sin(100t)volts, I=100sin(1...

    Text Solution

    |

  2. In the circuit below, the AC source the voltage V=20cos (omegat) volts...

    Text Solution

    |

  3. A coil of 200Omega resistance and 1.0H inductance is conneted to an AC...

    Text Solution

    |

  4. In series LCR circuit, the voltages across R, L and C are shown in the...

    Text Solution

    |

  5. When 100 V DC is applied across a solenoid, a current of 1.0 A flows i...

    Text Solution

    |

  6. The average power dissipated in a pure inductor L carrying an alternat...

    Text Solution

    |

  7. The power factor of LCR circuit at resonance is-

    Text Solution

    |

  8. In an ac circuit the current is given by i=0.5 sin (314 t + 60^@) mill...

    Text Solution

    |

  9. In an electric circuit applied ac emf is e=20 sin 300t volt and the cu...

    Text Solution

    |

  10. The time required for a 50Hz alternating current to increase from zero...

    Text Solution

    |

  11. A steady dc current of 2.83A is flowing in a resistance wire. The rms ...

    Text Solution

    |

  12. The variation of the instantaneous current (I) and the instantaneous e...

    Text Solution

    |

  13. In a series LCR circuit containing an AC voltage source of frequency o...

    Text Solution

    |

  14. An alternating emf is applied across a parallel combination of a resis...

    Text Solution

    |

  15. The value of current at half power points is -

    Text Solution

    |

  16. The power factor of a good choke coil is

    Text Solution

    |

  17. Which of the following has dimensions different from the other three,-

    Text Solution

    |

  18. In the figure shown, a current of 2 amperes flows in the circuit. The ...

    Text Solution

    |

  19. Assertion (A) : The electrostatic energy stored in capacitor plus magn...

    Text Solution

    |