1) When a current of 5 mA is passed through a galvanometer having a coil of resistance 15Ω, it shows full-scale deflection. The value of the resistance to be put in series with the galvanometer to convert it into a voltmeter of range 0-10 V is A) $2.045 \times 10^{3}$O B) $2.535 \times 10^{3}$O C) $4.005 \times 10^{3}$O D) $1985 \times 10^{3}$O Answer: Option DExplanation:Suppose a resistance Rs is connected in series with a galvanometer to convert it into a voltmeter. $I_{g}(G+R_{s})=V$ $R=\frac{V}{I_{g}}-G$ $\Rightarrow R=1985=1985k$Ω or 1985 × 103Ω
