Question

What is the value of current $I$ in given circuits?

Answer 1

Applying $KVL$ int eh loop,

$-18+Ve+6V20$

$V_R=18-6=12V$

By Ohm's law

$Ve=\left(500\Omega \right)I=500I$

As $V_R=12V$

$\Rightarrow I=\frac{12A}{500}=24mA$