Question

Find the effective resistance, when $1\Omega$, $10\Omega$ and $4\Omega$ resistances are connected in series.

• A. $25\Omega$
• B. $15\Omega$
• C. $30\Omega$
• D. $\frac{20}{27}\Omega$

Answer 1

The correct option is B $15\Omega$

In a series combination of resistors, the equivalent resistance is given by-

$R_{eq}=R_1+R_2+R_3+...$

Here-

$R_{eq}=1+10+4$

$⟹R_{eq}=15\Omega$

Answer-(B)