To convert the given galvanometer (of known resistance and figure of merit) into ammeter of desired range and to verify the same. (OM-12010)

APPARATUS WE SUPPLIED BATTERY ELIMINATOR (2-12V,2A) GALVANOMETER (EDM-80) AMMETER (0-1A) (EDM-80) RHEOSTAT (200 OHM,1.2A) ONE WAY KEY RESISTANCE BOX (500 OHMS) DCC WIRE To convert a galvanometer into an ammeter, you connect a very low-resistance wire—called a shunt resistance (S)—in parallel with the galvanometer. By placing a very small resistance (S) in parallel with the galvanometer resistance (G), most of the total circuit current (I) bypasses the galvanometer (\(I_{s}\)), while only a safe, small full-scale deflection current (\(I_{g}\)) passes through the galvanometer. The resulting parallel combination acts as an ammeter with a very low effective resistance, allowing it to be connected in series in a circuit without altering the main current.