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The intrinsic impedance in free space is(a) 60π(b) 12π(c) 6π(d) 120πI have been asked this question in examination.My question is from Intrinsic Impedance and Propagation Constant in portion Transmission Lines of Electromagnetic Theory

Answer»

Right answer is (d) 120π

Easy explanation: The intrinsic IMPEDANCE of the free space is the RATIO of the permittivity to the permeability. For air medium, the VALUE is 120π or 377 ohm.



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