A) \[\frac{1}{10\pi }\]
B) \[\frac{1}{20\pi }\]
C) \[\frac{1}{40\pi }\]
D) \[\frac{1}{60\pi }\]
Correct Answer: B
Solution :
\[\tan \phi =\frac{{{X}_{L}}}{R}\] \[\Rightarrow \] \[\tan 45{}^\circ =\frac{L\omega }{R}\] \[\Rightarrow \] \[L=\frac{R}{\omega }=\frac{100}{2\pi (1000)}\] \[[\because \,tan\,45{}^\circ =1]\] \[\Rightarrow \] \[L=\frac{1}{20\,\pi }\]You need to login to perform this action.
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