design a series circuit that has a approximately 1400 ohms of resistance and a current of 128.6 mA.

Answer 1

According to my calculations the curcuit would have a supply voltage of approximately 180.04 volts. This voltage is approximate because there are also other factors to consider, internal supply resistance, wire resistance, load resistor thermal variants. The circuit I’m assuming is DC not AC.

E = I x R

E = .1286 x 1400

E = 108.04 volts