Question

In the electric circuit given below, the reading of ammeter is

• A. 2 A
• B. 1 A
• C. 3 A
• D. 4 A

Answer 1

The correct option is A 2 A


Equivalent resistance, $R_{eq}=1.5+\frac{3\times \left(\frac{6\times 6}{6+6}\right)}{3+\left(\frac{6\times 6}{6+6}\right)}=3\Omega$ Current, $I=\frac{V}{R_{eq}}=\frac{12}{3}=4A$
$I_A=l\times \frac{3}{3+3}=4\times \frac{3}{6}$
= 2 A
Thus, the reading of the ammeter is 2 A.
Hence, the correct answer is option (a).