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  • In a potentiometer arrangement, a cell gives a balancing point at length of wire. T

In a potentiometer arrangement, a cell gives a balancing point at \mathrm{75\: cm} length of wire. This cell is now replaced by another cell of unknown emf. If the ratio of the emf's of two cells respectively is \mathrm{3:2}, the difference in the balancing length of the potentiometer wire in above two cases will be ______ cm.

Option: 1

25


Option: 2

-


Option: 3

-


Option: 4

-


Answers (1)

best_answer

For potentiometer,
\mathrm{E\, \alpha \, l}
\mathrm{\frac{E_{1}}{E_{2}}= \frac{l_{1}}{l_{2}}}
\mathrm{\frac{3}{2}= \frac{75 cm}{l_{2}}}
\mathrm{l_{2}= 50 cm}

The difference in the balancing Length of the potentiometer wire in above two cases is \mathrm{\Delta l= l_{1}-l_{2}}
\mathrm{\Rightarrow \Delta l= 25 cm}
 

Posted by

SANGALDEEP SINGH

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