APC Exam DU0-001 Topic 2 Question 109 Discussion

Actual exam question for APC's DU0-001 exam

Question #: 109
Topic #: 2

[All DU0-001 Questions]

Given a constant voltage, as the amperage increases, what must happen to the

cross-sectional area of a wire?

AIt needs to be larger.

BIt needs to be smaller.

CIt decreases with the square of the current.

DNothing, since the voltage has not changed.

Show Suggested Answer

Suggested Answer: D

by Kyoko at Mar 21, 2025, 03:15 AM

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Tijuana

18 days ago

Wait, is this a trick question? If the voltage doesn't change, the power has to go up with the current. That means the wire needs to be thicker to handle the extra juice. I'm not falling for any tricks here - A is the right answer, hands down!

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Jamal

3 days ago

I think you're right, A does make sense. The wire needs to be larger to handle the increased amperage.

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Blondell

26 days ago

Okay, let's see... Bigger current, constant voltage, that means the power is going up. The wire has to be able to handle that extra power without catching on fire. I'm going with A - the cross-sectional area needs to be larger.

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Lashandra

29 days ago

Hmm, let me think about this... If the voltage is constant, the power would increase as the current goes up, right? So the wire would need a bigger cross-sectional area to handle the higher current without melting. I'll go with A, the wire needs to be larger.

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Alpha

1 months ago

Whoa, this is a classic electromagnetism question! I remember learning about this in physics class. The cross-sectional area has to be larger to accommodate the higher current without the resistance overheating the wire. I'm picking A, no doubt about it.

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Renea

2 months ago

Hmm, this is a tricky one. Let's think about it - if the voltage is constant, the power (voltage x current) must be increasing as the current goes up. That means the cross-sectional area of the wire has to increase to handle the higher current. Gotta go with A on this one.

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Ailene

16 days ago

Yeah, it makes sense that as the current increases, the cross-sectional area of the wire needs to increase as well.

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Renay

20 days ago

I think you're right, the wire needs to be larger to handle the increased current.

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Bo

2 months ago

I think the answer is C) It decreases with the square of the current, because the cross-sectional area needs to decrease to maintain a constant voltage.

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Rosina

2 months ago

I agree with Elza, because as the amperage increases, the wire needs to be able to handle more current.

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Elza

2 months ago

A) It needs to be larger.

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