Meter bridge setup is shown|Current Electricity|JEEMAIN-2022

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JEE MAIN 2022

28-06-22 S1

Question

A meter bridge setup is shown in the figure. It is used to determine an unknown resistance R using a given resistor of $15 \Omega$. The galvanometer (G) shows null deflection when tapping key is at 43 cm mark from end A. If the end correction for end A is 2 cm then the determined value of R will be $\_\_\_\_$ $\Omega$

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