Question 121Electricity & Electronics - Assistant Engineer

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

The correct answer is D) It will decrease, causing an increase in the total load current. When additional parallel circuits are added to a circuit, the total circuit resistance decreases. This is because the overall resistance of parallel circuits is always less than the resistance of the individual circuits. As the total resistance decreases, the total load current increases according to Ohm's law (I = V/R). The line voltage remains constant, but the total load current rises due to the reduction in overall circuit resistance. The other options are incorrect because: A) Decreasing resistance would increase the line voltage, not decrease it. B) Decreasing resistance would increase the line voltage, not decrease it. C) Decreasing resistance would increase the total load current, not cause a drop.

Want to practice with timed exams?

Download Coast Guard Exams for the full exam experience.

Get the App