A PMMC instrument gives 29 mA at full scale reading when a potential difference across its terminals is 41mV. Show that how it can be used (a) as an ammeter for the current measurement in the range of...

A PMMC instrument gives 29 mA at full scale reading when a potential difference across its terminals is 41mV. Show that how it can be used

(a) as an ammeter for the current measurement in the range of 0 –6.5 A

(b) as a 0 – 790V range voltmeter for the voltage measurement.