Question

The value of the resistance, R, connected across the terminals, A and B, (ref. Fig.), which will absorb the maximum power, is

• A. $4.00k\Omega$
• B. $4.11k\Omega$
• C. $8.00k\Omega$
• D. $9.00k\Omega$

Answer 1

The correct option is A $4.00k\Omega$

Maximum power will be absorbed by R when $R=R_{Th}$.

$R_{AB}=R_{Th}=\left(3||6\right)+\left(4||4\right)$

$R_{Th}=R=2+2=4k\Omega$