See the electrical circuit shown in this figure. Which of the following equations is a correct equat

Question

See the electrical circuit shown in this figure. Which of the following equations is a correct equation for it?\

Professor PC Thomas Classes · Answer

(d)\ Applying Kirchhoff's equation to the loop ABFE, $$ -\left(i_{1}+i_{2}ight) R-i_{1} r_{1}+\varepsilon_{1}=0 $$ or $\quad \varepsilon_{1}-\left(i_{1}+i_{2}ight) R-i_{1} r_{1}=0$\