A) \[5.0\,\,\Omega \]
B) \[1.1\,\,\Omega \]
C) \[0.5\,\,\Omega \]
D) \[zero\].
Correct Answer: B
Solution :
Using the relation \[i=\frac{E}{R+r}\] (given:\[E=50\,\,V,\] \[R=10\Omega \] \[i=4.5\,\,amp\}\] \[4.5=\frac{50}{10+r}\] \[45+4.5r=50\] \[4.5r=50-45=5\] or \[r=\frac{5}{4.5}=\frac{10}{9}=1.1\Omega \]You need to login to perform this action.
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