In figure "B" of the illustrated circuit, if the resistance of R1 is 10 ohms, R2 is 10 ohms, and R3 is 10 ohms, what is the total resistance? Illustration EL-0032

Correct Answer: Option D — 15 ohms

This circuit configuration consists of two 10-ohm resistors in parallel, which are connected in series with a third 10-ohm resistor. The parallel combination yields an equivalent resistance of 5 ohms, which, when added to the series 10-ohm resistor, results in a total circuit resistance of 15 ohms.