Q21 A PMMC instrument gives 25 mA at full scale reading when a potential difference across its terminals is 32mV. Show that how it can be used (a) as an ammeter for the current measurement in the...

Q21

 A PMMC instrument gives 25 mA at full scale reading when a potential difference across its terminals is 32mV. Show that how it can be used

(a) as an ammeter for the current measurement in the range of 0 –3 A

(b) as a 0 – 510V range voltmeter for the voltage measurement.

(c) find the multiplying factor of shunt and AND  voltage amplification