Home
Class 12
PHYSICS
An alternating e.m.f. given by e=200 sin...

An alternating e.m.f. given by e=200 sin 50 t is applied to a circuit containing only a resistance of `50 Omega`. What is the value of r.m.s. current in the circuit?

A

`0.02828`

B

`0.2828`

C

`2.828`

D

`28.28`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    TARGET PUBLICATION|Exercise EVALUATION TEST|8 Videos
  • ELECTROMAGNETIC INDUCTION

    TARGET PUBLICATION|Exercise CRITICAL THINKING|84 Videos
  • ELASTICITY

    TARGET PUBLICATION|Exercise Evaluation test|14 Videos
  • ELECTROSTATICS

    TARGET PUBLICATION|Exercise EVALUATION TEST|14 Videos

Similar Questions

Explore conceptually related problems

An alternating emf of 200 V, 50 Hz is applied a circuit containing a resistance of 100 Omega and inductance of 0.1 H in series. The powerr dissipated in the circuit is

Alternating e.m.f. of E = 220 sin 100 pi t is applied to a circuit containing an inductance of (1//pi) henry. Write equation for instantaneous current through the circuit. What will be the reading of a.c. galvanometer connected in the circuit ?

An e.m.f. E=4cos(1000t) volt is applied to an LR circuit of inductance 3mH and resistance 4ohm . The amplitude of current in the circuit is

An alternating emf, e=200 sin omegat is applied to a lamp, whose filament has a resistance of 1000Omega . The rms valve of current is

A sinusoidal voltage of amplitude 5V is applied to resistance of 500 Omega . The r.m.s. current in the circuit is

An a.c. Voltage given by e=100 sin(3.14 t + 60^(@)) is applied to a machine having a power rating of 500 W. The r.m.s. value of the current is the circuit is

An alternating e.m.f. E=10sqrt(2) sin omega volt is applied to a circuit containing a pure inductance L and a resistance and voltage acros the resistance is 6 v between the current and potential difference in this circuit is

An alternating emf, e=300 sin100 pit volt, is applied to a pure resistance of 100 Omega . The rms current through the circuit is

In an ac circuit , an alternating voltage e = 200 sqrt2 sin 100 t volts is connected to a capacitor of capacitance 1 mu F . The rms value of the current in the circuit is :

Alternating voltage V = 400 sin ( 500 pi t ) is applied across a resistance of 0.2 kOmega . The r.m.s. value of current will be equal to

TARGET PUBLICATION-ELECTROMAGNETIC INDUCTION-COMPETITIVE THINKING
  1. The frequency of ac mains in India is

    Text Solution

    |

  2. The ratio of peak value and r.m.s value of an alternating current is

    Text Solution

    |

  3. An alternating e.m.f. given by e=200 sin 50 t is applied to a circuit ...

    Text Solution

    |

  4. If instantaneous current is given by i=4 cos(omega t + varphi) amperes...

    Text Solution

    |

  5. For an A.C. given by I=50cos(100t+45^(@))A. The value of I(rms)=A.

    Text Solution

    |

  6. A multimeter reads a voltage of a certain A.C. source as 100V. What is...

    Text Solution

    |

  7. The number of turns in the coil of an A.C. generator is 100 and its cr...

    Text Solution

    |

  8. In an AC circuit, peak value of voltage is 423 volts. Its effective vo...

    Text Solution

    |

  9. A generator produces a time varying voltage given by V=240 sin 120 t, ...

    Text Solution

    |

  10. An e.m.f. E=4cos(1000t)volt is applied to an LR circuit of inductance ...

    Text Solution

    |

  11. An AC generator produced an output voltage E=170sin 377t volts , where...

    Text Solution

    |

  12. A.C. voltmeter is connected to a source of e(0)=141.4 volt, then it wi...

    Text Solution

    |

  13. An alternating voltage E=200sqrt(2)sin(100t) is connected to a 1 micro...

    Text Solution

    |

  14. What is the reactance of a capacitor connected to a constant DC source...

    Text Solution

    |

  15. A small signal voltage V(t)=V(0)sin omegat is applied across an ideal ...

    Text Solution

    |

  16. For series LCR circuit, the wrong statement is

    Text Solution

    |

  17. In the series LCR circuit, the power dissipation is through

    Text Solution

    |

  18. An alternating current of frequency 'f' is flowing in a circuit contai...

    Text Solution

    |

  19. In a circuit L, C and R are connected in series with an alternating vo...

    Text Solution

    |

  20. Two coils A and B have mutual inductance 2xx10^(-2) Henry if the cur...

    Text Solution

    |