A) 80\[\Omega .\]
B) 40\[\Omega .\]
C) 20\[\Omega .\]
D) 15\[\Omega .\]
Correct Answer: B
Solution :
\[\alpha =\frac{S}{S+G}\alpha \] \[\therefore \] \[\frac{\alpha }{2}=\frac{S}{S+40}\alpha \] \[S+40=2S\] \[\therefore \] \[S=40\,\Omega \]You need to login to perform this action.
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