Question

A galvanometer having 50 divisions provided with a variable shunt is used to measure the current as
an ammeter when connected in series with a resistance of 90 , and a battery of internal resistance
102. It is observed that when the shunt resistance are 100.50.2, respectively the deflection are
respectively 9 & 30 divisions. What is the resistance of the galvanometer? Further if the full scale
deflection of the galvanometer movement is 300 mA, find the emf of the cell.​

Answer 1

Answer:

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