Q. A galvanometer of $25\ \Omega$ resistance can read a maximum current of $6mA.$ It can be used as a voltmeter to measure a maximum of $6\ V$ by connecting a resistance to the galvanometer. Identify the correct choice in the given answers
A) $1025\ \Omega$ in series
B) $1025\ \Omega$ in parallel
C) $975\ \Omega$ in series
D) $975\ \Omega$ in parallel
Explanation
(c) $R = \frac{V}{i_{g}} - G = \frac{6}{6 \times 10^{- 3}} - 25 = 975\Omega$ [In series]
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.