A) \[30{}^\circ \]
B) \[45{}^\circ \]
C) \[60{}^\circ \]
D) \[0{}^\circ \]
Correct Answer: D
Solution :
(d) \[0{}^\circ \] Let \[\phi \] be the phase difference between the applied voltage and current. Then \[\tan \phi =\frac{{{X}_{L}}-{{X}_{C}}}{R}=\frac{{{l}_{V}}\left( {{X}_{L}}-{{X}_{C}} \right)}{{{l}_{V}}R}\] \[=\frac{{{V}_{L}}-{{V}_{C}}}{{{V}_{R}}}=\frac{20\,V-20\,V}{40\,V}=0\] \[\therefore \phi ={{\tan }^{-1}}(0)=0{}^\circ \]
You need to login to perform this action.
You will be redirected in
3 sec
