to measure small currents A certain galvanometer has a

Last updated: 6/14/2023

to measure small currents A certain galvanometer has a resistance 500 and gives a full scale deflection for a current of 200 A This meter is connected as shown in the figure to make a multirange current meter S B MEC 500 S ww R The value of R is Cq B w R circuit R WA X Connection to the circuit is made at the terminals shown The currents in the external circuit needed to give full scale deflections when X is connected to A B and C in turn are shown in the table 31 fed X connected to Current in the external circuit mA A TC OYVE 1 10 100 Hel 2 SOCIA