Voltage drop question?

[LarryFine]

I=40 Squared R=0.50 40X40X0.50=800 LOL always check your stuff!

Whereas I would do: 40 x 0.5 = 20, then: 20 x 40 = 800.

 

[LadyDi]

The problem I have with that type of formula is that, on the rare occasions I need to use the formulae while working, it's too hard to remember, let alone use the ones with squares and square roots.

It's so much easier to remember and use the basics, especially since I usually do the math in my head. In my opinion, using E = I x R and P = E x I works so well and easily that it's worth the extra step.

Yes, I get it. This member is an apprentice, so just trying to help him gain that license. Sometimes, hearing or seeing something from multiple perspectives helps. Then the person chooses what's best for their learning style. That's what I like about this forum.

 

[ggunn]

And this points out why poor connections can result in fires...that 800 watts is producing heat at the location of the poor connection.

It also points out that we in this forum will argue over tiny little points in syntax until that dead horse is a greasy spot on the ground.

 

[LarryFine]

It also points out that we in this forum will argue over tiny little points in syntax until that dead horse is a greasy spot on the ground.

 

[electrofelon]

It also points out that we in this forum will argue over tiny little points in syntax until that dead horse is a greasy spot on the ground.

No we don't

 

[tallgirl]

No we don't

Well, technically, the heat will be conducted from the point of the poor connection based on the thermal conductivity of the materials in question.

Oh.

Yeah.

I'll shut up now.