A moving coil galvanometer, having a resistance G, produces full scale deflection when a current Ig flows through it. This galvanometer can be converted into (i) an anometer of range 0 to I0 (I0<Ig ) by connecting a shunt resistance RA to it and connecting a shunt resistance RA to is and (ii) into a voltmeter of range 0 to V (V=GI0 ) by connecting a series of resistance RV to it. Then,