In the adjacent circuit a resistance R is used. Initially with 'wire AB' not in the circuit, the galvanometer shows a deflection of d divisions. Now, the 'wire AB' is connected parallel to the galvanometer and the galvanometer shows a deflection nearly
d/2 division. Therefore current sensitivity of the galvanometer is about:
![692185_3a98ea2233e4489d86b1d2321e2441b8.PNG](https://search-static.byjusweb.com/question-images/toppr_ext/questions/692185_3a98ea2233e4489d86b1d2321e2441b8.PNG)