Ohms Law Apparatus
It consists of one voltmeter of with 10 volt, one milliammeter of 250mA. Two 4mm socket terminals are provided for the connection of unknown resistance & another two terminals for D.C. Supply. An
on/off switch and a potentiometer of 25 ohms, 3 Watt is also provided. The whole system is enclosed in a superior quality metal box. Supplied with four different carbon resistances and without D.C.
supply.