a) Show for the ammeter circuit in Fig. 1 that the current in the d’Arsonval movement is a...

a) Show for the ammeter circuit in Fig. 1 that the current in the d’Arsonval movement is always 1/25th of the current being measured.

b) What would the fraction be if the 100 mV, 2 mA movement were used in a 5 A ammeter?

c) Would you expect a uniform scale on a dc d’Arsonval ammeter?

Figure