Project File On Moving Coil Galvanometer For Class 12 Pdf Info

To increase sensitivity, increase ( N ), ( B ), or ( A ), or decrease ( k ). 7. Conversion into Ammeter A galvanometer can measure only small currents (μA to mA range). To measure larger currents, a low resistance called a shunt (( S )) is connected in parallel with the galvanometer.

Let ( V ) = voltage to be measured, ( I_g ) = full-scale deflection current. project file on moving coil galvanometer for class 12 pdf

Let ( I ) = total current to be measured, ( I_g ) = full-scale deflection current of galvanometer, ( R_g ) = galvanometer resistance. To increase sensitivity, increase ( N ), (

Total resistance = ( R_g + R ) By Ohm’s law: [ V = I_g (R_g + R) ] [ R = \fracVI_g - R_g ] To measure larger currents, a low resistance called