The current sensitivity of a galvanometer increases by 20%. If its resistance also increases by 25%, the voltage sensitivity will

Q. The current sensitivity of a galvanometer increases by 20%. If its resistance also increases by 25%, the voltage sensitivity will
(i ) decrease by 1%
(ii) increased by 5%
(iii) increased by 10%
(iv) decrease by 4%

Answer: (iv) decrease by 4%

Given,

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