Q. A galvanometer has 30 divisions and a sensitivity $16\ \mu A/div.$ It can be converted into a voltmeter to read $3\ V$ by connecting
A) Resistance nearly $6\ k\ \Omega$ in series
B) $6k\ \Omega$ in parallel
C) $500\ \Omega$ in series
D) It cannot be converted
Explanation
(a) $(R + G)i_{g} = V \Rightarrow (R + G) = \frac{V}{i_{g}}$
$\therefore$ Value of $R$ is nearly equal to $6k\Omega$
This is connected in series in a voltmeter
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.