Question

What is the current (I) in the circuit?

• A. $\frac{1}{2}A$
• B. 2 A
• C. $\frac{3}{2}A$
• D. none of these

Answer 1

The correct option is B 2 A

Effective resistance of the circuit $R_{eq}=(1+1)\parallel 2=2\parallel 2$

$\therefore$ $R_{eq}=\frac{2\times 2}{2+2}=1\Omega$

Thus current in the circuit $I=\frac{V}{R_{eq}}=\frac{2}{1}=2$ A