Susan Brown

[Susan Brown]

You aren’t the first one to get tripped up on this one! 🙂

[Susan Brown]

Hi Samuel,

Good question. I’m glad you’re trying to really nail this down.

If we are talking AC current, then there isn’t technically a “first” load, since the current changes directions.

All the loads in the series circuit will affect what the circuit current is. In fact, you can just add the resistances of the loads together to get the total resistance for the circuit, and knowing that and the source voltage, you can calculate the current of that circuit.

The source voltage gets dropped across each load in proportion to the resistance of the load. If you had two identical loads in a circuit, then each would drop half of the voltage. If one load was twice as high as the other, then it would drop twice the amount of voltage as the other. But once you have calculated the current going through the circuit (which is the same throughout a series circuit), then you can also just calculate the voltage drop across each load with E = I x R.

Does that help? Let me know if you have any followup questions.

[Susan Brown]

Hi Abe,

I’m glad you brought this to my attention. The correct answer is supposed to be “all of the above” – and that used to be one of the options. Somehow that had gotten altered – I’ve fixed it now.

Thanks!
Susan

[Susan Brown]

Hi Dan,

You are correct that voltage and current are both required for a load to do work. And the combination of voltage and current is also known as “power”. (P = I x E)

That’s the answer we are looking for there.

[Susan Brown]

So it has to do with the sealed system, correct?

[Susan Brown]

Do you see where in the video he’s talking about seeing the ice ball? What type of failure is being described there?

[Susan Brown]

Just want to make sure – Did you notice the word “not” in the question?

[Susan Brown]

Hi Jim – thanks for the question! I’m going to have to consult with Mr. Samurai on this one, and he is out for the whole day. As soon as I have an answer for you I’ll get back to you.

[Susan Brown]

We talk about the ice ball about halfway through the video in that unit.

[Susan Brown]

Look at the photo in Unit 2 of several different evap frost patterns. Which one matches the description?

[Susan Brown]

just did

[Susan Brown]

That’s a correct statement. The answer choices we give you for that question aren’t quite so detailed, but I think you’ll know which one is correct.

[Susan Brown]

Right! So, you can only assume there will be some kind of start device, but not which type. The correct answer has to do with the type of windings that all split-phase motors will have.

[Susan Brown]

Is the only start device a PTC type?

[Susan Brown]

Right, which of course wouldn’t be that big of a deal with other types of appliances, but no one wants to risk their food spoiling just because of a nuisance trip.

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