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Physics
The formula of impedance for circuit R-L is
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Q. The formula of impedance for circuit R-L is
Rajasthan PET
Rajasthan PET 2003
A
$ \sqrt{{{R}^{2}}+\frac{1}{{{\omega }^{2}}{{L}^{2}}}}R $
B
$ {{R}^{2}}+{{\omega }^{2}}{{L}^{2}} $
C
$ \sqrt{{{R}^{2}}+{{\omega }^{2}}{{L}^{2}}} $
D
$ \sqrt{{{\omega }^{2}}{{L}^{2}}+\frac{1}{{{R}^{2}}}}\, $
Solution:
$ Z=\sqrt{{{R}^{2}}+X_{L}^{2}}=\sqrt{{{R}^{2}}+{{\omega }^{2}}{{L}^{2}}} $