Question 80Electricity & Electronics - QMED

The correct answer is B) 2 amps. To calculate the total current flowing in the circuit, we can use the formula for total resistance in a parallel circuit: 1/Rtotal = 1/R1 + 1/R2 + 1/R3. Given that R1, R2, and R3 are all 10 ohms, the total resistance is 10/3 ohms. Applying Ohm's law, with a source voltage of 30 volts, the total current in the circuit is 30 volts / (10/3 ohms) = 2 amps. The other options are incorrect because: A) 1 amp is too low, as the calculation shows the total current is 2 amps. C) 5 amps is too high, as the total resistance of 10/3 ohms would not allow for 5 amps of current. D) 15 amps is also too high and not possible given the source voltage and resistance values provided.