Question 238Electricity & Electronics - QMED

The correct answer is D) 12 ohms. The total resistance of the circuit in figure "B" is the sum of the individual resistances R1, R2, and R3. Since R1 is 3 ohms, R2 is 4 ohms, and R3 is 5 ohms, the total resistance is the sum of these three values, which is 3 + 4 + 5 = 12 ohms. The other answer choices are incorrect because they do not accurately represent the total resistance of the circuit. Option A) 0.5 ohms is too low, option B) 1.28 ohms is too low, and option C) 1.5 ohms is too low. The correct answer, as per the information provided in the illustration and question, is 12 ohms.