Question 42Electricity & Electronics - QMED

70% to pass

What will happen to the total circuit resistance when additional parallel circuits are added to a circuit?

Ait will increase, causing a decrease in the line voltage
Bit will decrease, causing an increase in the total load current
Cit will decrease, causing an increase in the line voltage
Dit will increase, causing a drop in the total load current
AI Explanation

The correct answer is B) it will decrease, causing an increase in the total load current. When additional parallel circuits are added to a circuit, the total circuit resistance will decrease. This is because the addition of parallel circuits creates more paths for the current to flow, effectively reducing the overall resistance of the system. With a decrease in total resistance, the total load current will increase according to Ohm's law (I = V/R). The other options are incorrect because: A) Decreasing the total resistance would increase the line voltage, not decrease it. C) Decreasing the total resistance would increase the line voltage, not decrease it. D) Decreasing the total resistance would increase the total load current, not decrease it.

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Official Resources
46 CFR Electrical Engineering 46 CFR Machinery & Electrical USCG National Maritime Center
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