A) 0.5\[\Omega \]
B) 0.6\[\Omega \]
C) 1.2\[\Omega \]
D) 1.5\[\Omega \]
Correct Answer: C
Solution :
For potentiometer, the internal resistance r, is given by \[r=\left( \frac{{{l}_{1}}}{{{l}_{2}}}-1 \right)R\] Given, \[{{l}_{1}}=600\,cm\], \[{{l}_{1}}=50\,cm\], \[R=6\,\Omega \] \[\therefore \] \[r=\left( \frac{60}{50}-1 \right)\,6=1.2\,\,\Omega \]You need to login to perform this action.
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