Home
Class 12
PHYSICS
An alternating voltage given by E = 280 ...

An alternating voltage given by `E = 280 sin 50 pit` is connected across pure resistor of `40 Omega`. Find r.m.s. current through the bulb.

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 voltage given by E = 280 sin 50 pit is connected across pure resistor of 40 Omega . Find frequency of the source.

A light bulb is rated 50 W for a 220 V supply. Find r.m.s. current through the bulb.

In an a.c. circuit, an alternating voltage E = 200 sqrt2 sin 100t (in volt) is connected to a capacitor of capacitance 1muF . The r.m.s. value of the current in the circuit is

An a.c. source generating a voltage E = E_0 sin omegat is connected to a capacitor of capacitance C. Find the expression for current I, flowing through it. Plot a graph of E and I versus omegat to show that the current is pi//2 ahead of the voltage.

A light bulb is rated 200 W for a 220 V supply of 50 Hz. Calculate r.m.s. current through the bulb.

A sinusodial voltage E = 200 sin 314 t is applied to a resistor of 10 ohm resistance. Calculate r.m.s. value of the voltage

A 30 muF capacitor is connected to a 220V , 50 Hz source Find its r.m.s. current and peak current.

A capacitor of 1muF is connected to a source of a.c. having e.m.f. given by equation. E = 200 cos 120 pi t Find the value of r.m.s. current through the capacitor.

MODERN PUBLICATION-ALTERNATING CURRENTS-EXERCISE
  1. An alternating voltage given by E = 280 sin 50 pit is connected across...

    Text Solution

    |

  2. A lamp is connected in series with a capacitor to a high frequency a.c...

    Text Solution

    |

  3. An air core coil and an electric bulb are connected in series across a...

    Text Solution

    |

  4. Answer the following questions: A choke coil in series with a lamp is ...

    Text Solution

    |

  5. A lamp is connected in series with a capacitor. What will happen if d....

    Text Solution

    |

  6. Explain : voltages across L and C in series are 180^(@) out of phase, ...

    Text Solution

    |

  7. The total impedance of a circuit decreases, when a capacitor is added ...

    Text Solution

    |

  8. When an a.. Circuit with a series combination of inductance, capacitan...

    Text Solution

    |

  9. When a capacitor is connected in series LR circuit the alternating cur...

    Text Solution

    |

  10. An alternating voltage of frequency f is applied across LCR circuit. L...

    Text Solution

    |

  11. An alternating voltage of frequency f is applied across LCR circuit. L...

    Text Solution

    |

  12. Give applications of resonance in series LCR circuit.

    Text Solution

    |

  13. An capacitor C, a variable resistor R and a bulb B are connected in se...

    Text Solution

    |

  14. An capacitor C, a variable resistor R and a bulb B are connected in se...

    Text Solution

    |

  15. A capacitor with capacitance C and a coil with active resistance R and...

    Text Solution

    |

  16. An inductor L of inductance X(L) is connected in series with a bulb B ...

    Text Solution

    |

  17. An inductor L of inductance X(L) is connected in series with a bulb B ...

    Text Solution

    |

  18. As shown in figure an electric lamp having coil of negligible inductan...

    Text Solution

    |

  19. As shown in figure an electric lamp having coil of negligible inductan...

    Text Solution

    |

  20. In the circuit shown below R represents an electric bulb. If the frequ...

    Text Solution

    |

  21. Show in the figure, two electric circuits A and B. Calculate the ratio...

    Text Solution

    |