A) 0.4
B) 0.5
C) 0.8
D) 1.0
Correct Answer: C
Solution :
\[\cos \phi =\frac{R}{Z}=\frac{{{V}_{R}}}{V}=\frac{80}{\sqrt{{{80}^{2}}+{{(100-40)}^{2}}}}\] \[=\frac{80}{100}=0.8\]You need to login to perform this action.
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