Question

Find effective resistance of two $8\Omega$ resistors in combination :

Answer 1

These two resistances $8\Omega$ are in parallel

Req in parallel:-

$\frac{1}{R_{eq}}=\frac{1}{R_1}+\frac{1}{R_2}$

$\frac{1}{R_{eq}}=\frac{1}{8}+\frac{1}{8}$

$\frac{1}{R_{eq}}=\frac{2}{8}$

$Req=4\Omega$