Home
Class 12
PHYSICS
An ac source e=E0sinomegat is applied ac...

An ac source `e=E_0sinomegat` is applied across an ideal inductor of inductance L. Show mathematically that the current lags the voltage by a phase angle of `pi/2`.

Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENT

    CHHAYA PUBLICATION|Exercise EXAMINATION ARCHIVE WITH SOLUTIONS (WBJEE)|3 Videos
  • ALTERNATING CURRENT

    CHHAYA PUBLICATION|Exercise EXAMINATION ARCHIVE WITH SOLUTIONS (JEE Main)|5 Videos
  • ALTERNATING CURRENT

    CHHAYA PUBLICATION|Exercise ENTRANCE CORNER (Integer Answer Type)|8 Videos
  • CHHAYA PUBLICATION|Exercise EXAMPLE|1 Videos
  • ATOM

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|18 Videos

Similar Questions

Explore conceptually related problems

An ac voltage e=E_0sinomegat is applied across an ideal inductor of self-inductance [L]. Write down the peak current.

An ac voltage e= E_0 sinomega t is applied across an ideal inductor of slef inductance L. Write down the peak current.

An alternating voltage E=E_0sinomegat is applied across an inductor L. Show by calculation that the current lags the voltage by a phase angle pi//2 (Assume inductor L has no resistance).

A small signal voltage V(t) = V_0sinomegat is applied across an ideal capacitor C.

A pure inductive coil is connected between the sides of an AC source. Show mathematically that the current will lag behind the AC voltage by a phase-difference of pi/2

AC voltage is applied on purely inductive circuit of inductance L. If the voltage be e= E_0sin (omegat) then show mathematically current lags behind the voltage by a phase difference pi/2

A voltage V_0sinomegat is applied across a series combination of resistance R and inductor L. The peak value of the current in the circuit is

Show that the current leads the voltage by an angle of pi/2 in a purely capacitive a.c. circuit.

A series combination of an inductor of self-inductance L, capacitor of capacitance C and resistor R is connected to an alternating voltage source of V=V_0sinomegat . The current through the circuit is I=I_0sin(omegat-theta) ,where I_0=V_0/(sqrt(R^2+(omega-1/(omegaC))^2)) and theta=tan^-1 ""1/R(omegaL-1/(omegaC)) . Now that, the frequency of both voltage and current is f=omega/(2pi) . The rms value of these parameters during one complete cycles are V_(rms)=V_0/sqrt2 and I_(rms)=I_0/sqrt2 respectively. These values are shown in alternating voltmeter and ammeter. The power consumed by the circuit P=VI. The mean value i.e., the effective power of the circuit in a complete cycle is overlineP=V_(rms)I_(rms)costheta . This costheta is termed the power factor. V=V_0sinomegat electromotive force is applied to an alternating circuit consisting of resistance R' and an inductor of self-inductance L. The phase difference between the voltage and current is

An a.c. source generating voltage e=e_@ sin omegat is connected to a capacitor of capacitance C . Find the expression for the current I flowing through it. Plot a graph of e and I versus omegat

CHHAYA PUBLICATION-ALTERNATING CURRENT -EXAMINATION ARCHIVE WITH SOLUTIONS (WBCHSE)
  1. An ac having a peak value 1.41 A is used to heat a wire. A dc producin...

    Text Solution

    |

  2. An ac voltage e=E0sinomegat is applied across an ideal inductor of sel...

    Text Solution

    |

  3. The instantaneous voltage from an ac source is given by e=200sin 314t ...

    Text Solution

    |

  4. State the condition under which the phenomenon of resonance occurs in ...

    Text Solution

    |

  5. A series LCR circuit acts as a purely resistive circuit, when

    Text Solution

    |

  6. What is Q-factor?

    Text Solution

    |

  7. Define the term 'root mean square' (rms) value of alternating current.

    Text Solution

    |

  8. An ac source e=E0sinomegat is applied across an ideal inductor of indu...

    Text Solution

    |

  9. IF L is 100mH and the applied ac source frequency be 50 Hz, find the i...

    Text Solution

    |

  10. Define wattless current.

    Text Solution

    |

  11. Show that in ac circuit the average power dissipated per cycle in a pu...

    Text Solution

    |

  12. Compare between inductive reactance and capacitive reactance.

    Text Solution

    |

  13. State the factors on which the peak value of alternating emf depends.

    Text Solution

    |

  14. In an LCR series combination, R=400Omega, L=100 mH and C=1muF. This co...

    Text Solution

    |

  15. State the working principle of ac generator.

    Text Solution

    |

  16. Why is the use of ac voltage preferred over dc voltage?

    Text Solution

    |

  17. The power factor of LR circuit is 1/sqrt3. IF the frequency of ac be d...

    Text Solution

    |

  18. IF the rotating speed of a dynamo is doubled, the induced electromotiv...

    Text Solution

    |

  19. The number of turns of the primary and secondary of a transformer are ...

    Text Solution

    |

  20. What is the rms value of the current i=5sqrt2sin100pitA?

    Text Solution

    |