The resistance of a coil for DC is 5,Omega. I | vedclass

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(B) real coil possesses both resistance $R$ and self-inductance $L.$ For $DC,$ the inductive reactance $X_L = 2\pi fL$ is zero because the frequency $

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(B) real coil possesses both resistance $R$ and self-inductance $L.$ For $DC,$ the inductive reactance $X_L = 2\pi fL$ is zero because the frequency $f = 0.$ Thus,the effective resistance is simply $R = 5\,\Omega.$ For $AC,$ the coil offers an impedance $Z = \sqrt{R^2 + X_L^2},$ where $X_L = \omega L = 2\pi fL > 0.$ Since $Z = \sqrt{R^2 + X_L^2} > R,$ the effective resistance (impedance) of the coil in an $AC$ circuit will be greater than its resistance in a $DC$ circuit.

The resistance of a coil for $DC$ is $5\,\Omega.$ In $AC,$ the resistance

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