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  • A potentiometer is connected across A and B and a balance is obtained at 64.0 cm. When potentiometer lead to B is moved to C, a balance is found at 8.0 cm. If the potentiometer is no

A potentiometer is connected across A and B and a balance is obtained at 64.0 cm. When potentiometer lead to B is moved to C, a balance is found at 8.0 cm. If the potentiometer is now connected across B and C, a balance will be found at

Option: 1

8.0 cm


Option: 2

 56.0 cm  


Option: 3

64.0 cm


Option: 4

72.0 cm


Answers (1)

best_answer

\begin{aligned} &\mathrm{ E_1 \propto 64 }\\ &\mathrm{ E_1-E_2 \propto 8 }\\ &\mathrm{ E_2 \propto l }\\ &\mathrm{ \therefore 64-l=8 \text { or } l=64-8=56 \mathrm{~cm}}\\ \end{aligned}

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