A) 0.250
B) 0.500
C) 0.750
D) 1.250
Correct Answer: B
Solution :
Here, \[{{l}_{1}}\]= 125 cm, \[{{l}_{2}}\]= 100 cm R=2\[\Omega \] Internal resistance \[r=\left( \frac{E}{V}-1 \right)R=\left( \frac{{{l}_{1}}}{{{l}_{2}}}-1 \right)R\] \[=\left( \frac{125}{100}-1 \right)\times 2\] \[=\left( \frac{5}{4}-1 \right)\times 2=\frac{1}{4}\times =\frac{1}{2}\] =0.5\[\Omega \]You need to login to perform this action.
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