Answer to Question #228262 in Physics for Porco

Question

The p.d applied to a 1 kΩ resistance in order that a current of 100 μA may flow is

Answer 1

The Ohm's law says

$$I=V/R$$

Hence, the potential difference

$$V=I*R\\=100*10^{-6}\:\rm A*1000\: \Omega=0.1\:\rm V$$