Question

Two resistors of resistances $4\Omega$ each are connected in series. Find the equivalent resistance of the circuit.

• A. $1\Omega$
• B. $4\Omega$
• C. $2\Omega$
• D. $8\Omega$

Answer 1

The correct option is D

$8\Omega$

Since the resistors $R_1$ &$R_2$ are in series, the effective resistance of the circuit is given by:
$R_{eff}$ =$R_1$ +$R_2$
Given: $R_1$ = $R_2=4\Omega$
$\therefore R_{eff}=4\Omega +4\Omega$
$\Rightarrow R_{eff}=8\Omega$