Question

Calculate the equivalent resistance when two resistances of $3ohms$ and $6ohms$ are connected in parallel.

• A. $1\Omega$
• B. $3\Omega$
• C. $2\Omega$
• D. $6\Omega$

Answer 1

The correct option is C $2\Omega$

We know that in parallel combination, equivalent resistance is given by-

$\frac{1}{R}=\frac{1}{R_1}+\frac{1}{R_2}$

$⟹\frac{1}{R}=\frac{1}{3}+\frac{1}{6}$

$⟹\frac{1}{R}=\frac{2+1}{6}=\frac{1}{2}$

$⟹R=2\Omega$

Answer-(C)