te (G) of a Galvanometer Physies (2) Exp. No.(5): Purpose: Charaeteristies of a Galvanometer To find the sensitivity (S, ) and internal resistance Theory: (2) R=($11, )*7- (S+G) S, IT, R Circuit Diagram: Ig RK А i R' va Measurements of Calculations : d=20 S = 5.1 S2 From the graph find : 1 & G 0.8 From equation No.(2): Calculate S, R(22) 17 (mA) 7p (mA) // (mA) 500 0.9 700 1: 1-2 900 lou 1.6 1100 1.04 1300 2.2 1500 2.312.4 1700 Q.5) 2.6 J. 2.1 1900 2-7 2.8 Discussion : Q1: What are the factors that may change the sensitivity of a galvanometer (S, ) and its internal resistance (G) Q2: If the current passing through the galvanometer (1, ) increased, what will happen to the sensitivity of the galvanometer (S,) 23: If you change the deflection of the galvanometer to (10), what will happen to the the sensitivity of a galvanometer (S, ) and the current passing through it (1)
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