Question

The total current supplied to the circuit by the battery is

• A. $1A$
• B. $2A$
• C. $4A$
• D. $6A$

Answer 1

The correct option is C

$4A$

The equivalent circuit is shown in the figure.

Net resistance in the upper arm $=1.5+\frac{2\times 6}{2+6}=1.5+1.5=3\Omega$

Now we have $3\Omega$ and $3\Omega$ resistance is parallel. The net resistance is $\text{R}=\frac{3\times 3}{3+3}=1.5\Omega$

Current, $\text{I}=\frac{6\text{V}}{1.5\Omega }=4\text{A}$