Question

In the electric circuit shown in the figure, the effective resistance of two 8 $\Omega$ resistors in the combination is :

• A. $4\Omega$
• B. $16\Omega$
• C. $2\Omega$
• D. $12\Omega$

Answer 1

The correct option is A $4\Omega$

In this case, the 8 ohms resistances are connected in parallel.
So the effective resistance ($R_{eff}$) is given as:
$\frac{1}{R_{eff}}=\frac{1}{8}+\frac{1}{8}=\frac{1}{4}$.
Hence, the effective resistance of two 8 ohms resistors in the combination is given as $4$ ohm.