A) \[4.5\,\Omega \]
B) \[7.8\,\Omega \]
C) \[6.3\,\Omega \]
D) \[2.08\,\Omega \]
Correct Answer: D
Solution :
(d) \[2.08\,\Omega \] Here, \[{{l}_{1}}=220\,cm,{{l}_{2}}=130\,cm,\,R=3\,\Omega \] \[\therefore \] Internal resistance, \[r=\left( \frac{{{l}_{1}}-{{l}_{2}}}{{{l}_{2}}} \right)R=\left( \frac{220-130}{130} \right)\times =2.08\,\Omega \]
You need to login to perform this action.
You will be redirected in
3 sec
