*Determine the series resistance needed to convert a galvanometer to a voltmeter reading 15 V on full scale deflection if a current of 2.5mA causes full scale deflection and the resistance of the coil is 10?.
*What potential difference appears across the galvanometer described in problem 6 when the pointer is fully deflected? The meter resistance is 10?. [Here is problem 6: Two 150V voltmeters are being compared; meter A has 5KO/V while meter B has a total meter resistance of 750KO.]