What would be the total current flowing in the circuit shown in figure "B" of the illustration if the source is 30 volts, the resistance of R1 is 10 ohms, R2 is 10 ohms and R3 is 10 ohms, respectively? Illustration EL-0032

Correct Answer: Option B — 2 amps

For a series-parallel network, total resistance equals the series resistor plus the parallel combination equivalent. With three 10-ohm resistors in a mixed configuration yielding 15 ohms total, Ohm's law ($I = \frac{V}{R}$) with a 30-volt source produces 2 amperes total current.