Home
Class 11
PHYSICS
In the figure shown, a current of 2 ampe...

In the figure shown, a current of 2 amperes flows in the circuit. The impedence of the circuit is-

A

`170 Omega`

B

`70 Omega`

C

`130 Omega`

D

`120 Omega`

Text Solution

Verified by Experts

The correct Answer is:
C
`V=sqrt(100^(2)+240^(2))=10sqrt(100+576)=10sqrt(676)`
`z=(V_(m))/(I_(m))=5sqrt(676) =130`
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

In the circuit shown, the value of I in ampere is

In the adjoining figure the impedence of the circuit will be

Consider the circuit Then, the current flow in the circuit is

In the circuit shown the value of I in ampere is :

If the power factor in a circuit is unity, then the impedance of the circuit is

In the circuit shown in figure current in the circuit is

In the adjoining figure the impedance of the circuit will be

In the circuit shown in the figure, find: (a) the reactance of the circuit (b) impedance of the circuit (c )the current (d) readings of the ideal AC voltmeters(these are hot wire instruments and read rms values)

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

    |