Q. An ammeter has a resistance of $G\ \Omega$ and a range of $i$ ampere. The value of resistance used in parallel to convert in into an ammeter of range in ampere is
A) $n\ G$
B) $(n - 1)G$
C) $\frac{G}{n}$
D) $\frac{G}{n - 1}$
Explanation
(d) $S = \ \frac{i_{g}\ G}{i - i_{g}} = \frac{iG}{ni - i} = \frac{G}{n - 1}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.