A $1 \mathrm{k} \Omega$ resistor has 20 mA of current flowing through it. The applied voltage is the

Question

A $1 \mathrm{k} \Omega$ resistor has 20 mA of current flowing through it. The applied voltage is then

Professor PC Thomas Classes · Answer

By Ohm's Law, $V = IR = 20 	imes 10^{-3} 	ext{ A} 	imes 10^3 \Omega = 20 	ext{ V}$.