### Discussion :: RL Circuits - General Questions (Q.No.11)

Vikas Kumar said: (Jun 3, 2012) | |

(140+j0)*(0+j60)/140+j0+0+j60=140angle0*60angle90/140+j60 =8400angle90/152.31angle25 =55.15angle65 so answer is 55.15 |

Poorni said: (Aug 5, 2016) | |

Please explain this. |

Muhammad Asif Latif said: (Aug 12, 2016) | |

Impedance Z = 1/Y, Admittance Y = sqrt ( (1/140) 2 + (1/60) 2) Y = 0.018. Z = 1/Y, Z = 1/0.018, Z = 55.14. |

Abdallah Labib said: (Feb 27, 2017) | |

Z = R * XL/√(R2 * XL2). Z= 140 * 60/√(140 * 140 * 60 * 60). Z= 55.15Ω. Option B. |

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