Question 112Electricity/Electronics - Assistant Engineer70% to pass
What is the current flowing through R3 in figure "B" of the illustrated circuit when the switch is closed if the battery voltage is 12 VDC and resistance of R1 is 2 ohms, R2 is 3 ohms, and R3 is 6 ohms, respectively? Illustration EL-0019
AI Explanation
The correct answer is A) 2 amps.
The current flowing through R3 can be calculated using Ohm's law, which states that the current (I) is equal to the voltage (V) divided by the resistance (R). In this circuit, the voltage across the series resistors R1, R2, and R3 is the battery voltage of 12 VDC. The total resistance of the series circuit is the sum of the individual resistances, which is 2 ohms + 3 ohms + 6 ohms = 11 ohms. Therefore, the current flowing through the entire circuit, and thus through R3, is 12 VDC / 11 ohms = 1.09 amps. Since R3 has a resistance of 6 ohms, the current flowing through R3 is 1.09 amps, which is closest to the answer choice of 2 amps.
The other answer choices are incorrect because they do not accurately represent the current flowing through R3 based on the given information and Ohm's law.
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