What is the total resistance of figure "B" of the illustrated circuit if the resistance of R1 is 3 ohms, R2 is 4 ohms, and R3 is 5 ohms? EL-0020

Correct Answer: Option D — 12 ohms

Total resistance in a series resistive circuit is the direct algebraic sum of all individual resistors ($R_{total} = R_1 + R_2 + R_3$). Adding 3 ohms, 4 ohms, and 5 ohms yields a total resistance of 12 ohms, adhering to standard DC circuit analysis principles.