Question

Find the current supplied by 60 V source in the given circuit.

• A. 4 A
• B. 6 A
• C. 2 A
• D. 12 A

Answer 1

The correct option is B 6 A

Equivalent resistance of $12\Omega$, $6\Omega$ and $12\Omega$ connected in parallel $\frac{1}{R^{\prime }}=\frac{1}{12}+\frac{1}{6}+\frac{1}{12}$

$⟹$ $R^{\prime }=3\Omega$

Thus total resistance of the circuit $R_{eq}=7+R^{\prime }=7+3=10\Omega$

$\therefore$ Current supplied by source $I=\frac{V}{R_{eq}}=\frac{60}{10}=6$ A