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AIEEE 2002
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The power factor of $$AC$$ circuit having resistance $$(R)$$ and inductance $$(L)$$ connected in series and an angular velocity $$\omega $$ is
A
$$R/\omega L$$
B
$$R/{\left( {{R^2} + {\omega ^2}{L^2}} \right)^{1/2}}$$
C
$$\omega L/R$$
D
$$R/{\left( {{R^2} - {\omega ^2}{L^2}} \right)^{1/2}}$$
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