Question

The equivalent resistance and potential difference between A and B for the circuit is respectively :-

• A. $4\Omega ,8V$
• B. $8\Omega ,4V$
• C. $2\Omega ,2V$
• D. $16\Omega ,8V$

Answer 1

The correct option is A $4\Omega ,8V$

The equivalent resistance between A and B is $R_{AB}=\left(6||6\right)||3+2.5=\left(6/2\right)||3+2.5=3||3+2.5=\frac{3}{2}+2.5=1.5+2.5=4\Omega$
Potential between A and B is $V_{AB}=I{R}_{AB}=2\times 4=8V$