Home
Class 12
PHYSICS
An alternating e.m.f is applied across a...

An alternating e.m.f is applied across a capacitor. Show that current in it leads the applied e.m.f. by `90^@` what is capacitive reactance of such a circuit? Write down the units of capacitive reactance.

Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENTS

    MODERN PUBLICATION|Exercise EXERCISE|201 Videos

  • CAPACITOR

    MODERN PUBLICATION|Exercise EXAMPLE|262 Videos

Similar Questions

Explore conceptually related problems

An alternating e.m.f of 100 V(r.m.s) 50 Hz is applied across a capacitor of 10muF and a resistance of 100 ohm in series. Calculate the reactance of the capacitor.

What is the capacitive reactance of a capacitor used in a circuit having d.c. e.m.f.? Explain.

An alternating source of e.m.f is applied to an inductor and resistor in series Investigate the phase relationship between current and e.m.f. what is the impedance of the circuit?

An alternating e.m.f. is supplied to a pure inductor investigate the phase relationship between current flowing through it and the applied e.m.f.

An alternating e.m.f is supplied through apure inductance. Investigate the relationship between current flowing through it and the applied e.m.f.

An alternating e.m.f. is applied to a pure capacitance such that the capacitive reactance is 10 ohm. If the frequency of a.c. is doubled,the reactance will become

An alternating e.m.f. is supplied to a pure resistance investigate the phase relationship between current flowing through it and the applied e.m.f.

An alternating e.m.f of 100 V(r.m.s) 50 Hz is applied across a capacitor of 10muF and a resistance of 100 ohm in series. Calculate the average power supplied

what is expression for the capacitive reactance of a capacitor. Also write the r.m.s. current through the capacitor.

MODERN PUBLICATION-ALTERNATING CURRENTS-EXERCISE
  1. An a.c. voltage E = E0 sin omegatis applied across an inductance L. O...

    Text Solution

    |

  2. An a.c. voltage E = E0 sin omegatis applied across an inductance L. O...

    Text Solution

    |

  3. An alternating e.m.f is applied across a capacitor. Show that current ...

    Text Solution

    |

  4. Finda phase relation between current and voltage in an a.c. circuit co...

    Text Solution

    |

  5. An alternate e.m.f. is applied to pure capacitance. Investigate the ph...

    Text Solution

    |

  6. Derive the expression for the impedance of an a.c. circuit with an ind...

    Text Solution

    |

  7. An alternating source of e.m.f is applied to an inductor and resistor ...

    Text Solution

    |

  8. Prove that high frequency a.c. cannot pass through a pure inductor, bu...

    Text Solution

    |

  9. Prove that high frequency a.c. cannot pass through a pure inductor, bu...

    Text Solution

    |

  10. Derive the expression for the impedance of an a.c. circuit with a capa...

    Text Solution

    |

  11. An a.c. source generating a voltage E = E0 sin omegat is connected to ...

    Text Solution

    |

  12. An alternating source of e.m.f is applied to an inductor and resistor ...

    Text Solution

    |

  13. What do you mean by inductive reactance, capacitive reactance and impe...

    Text Solution

    |

  14. What is the impedance of a circuit ?

    Text Solution

    |

  15. Derive the expression for the impedance of an a.c. circuit with an ind...

    Text Solution

    |

  16. For the current in LCR circuit to be maximum.

    Text Solution

    |

  17. Derive a relation for the impedance of LCR circuit. What is the relati...

    Text Solution

    |

  18. With the help of phasor diagram derive an expression for impedance in ...

    Text Solution

    |

  19. What do you mean by the impedance of LCR-circuit?

    Text Solution

    |

  20. Define resonant frequency of LCR series circuit.

    Text Solution

    |