Question 80Electricity & Electronics - QMED
70% to passWhat 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
A1 amp
B2 amps
C5 amps
D15 amps
AI Explanation
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.
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