Question

calculeaza rezistenta echivalenta a gruparii in paralel daca ai n rezistoare cu rezistente electrice egale​

Answer 1

$\frac{1}{R_e}=\sum\limits^n_{k=1} {\frac{1}{R_k} }\\ R_1=R_2=...=R_n=R\\\frac{1}{R_e}=\sum\limits^n_{k=1} {\frac{1}{R_k} }=\frac{1}{R}+ \frac{1}{R}+...+ \frac{1}{R}=\frac{n}{R}=>R_e=\frac{R}{n}$