That is absolutely amazing. Thanks for the replies.
How many wraps/turns of a wire constitutes a coil that can resist(DC)/impede(AC) a short circuit?
A 12 gauge wire can be connected to a 120v outlet and as long as there are enough turns, we have a transformer primary without short? And if I...
That's a good example. I thought potentiometers were used in DC circuits only and rheostats were used in A/C circuits only. This a good example of parts that can't mingle between the two types of power?
I did read that wrong. I don't understand what that is yet, but I'm going to check wikipedia and see.
Why can a single coil like the one primary coil of a transformer have voltage applied to it without being a short circuit? Does the winding of wire create resistance? A transformer doesn't...
I am looking at electromagnets and discovered an article using an A/C version.
What I am surprised by is that there is no mention of how the A/C is being used.
http://www.coolmagnetman.com/magacem.htm
Wouldn't someone creating this version of an electromagnet kill themselves?
There's no...
I thought that resistors, like the ones that I buy at RadioShack, could only be used on D/C circuits. I was looking up how to's on electromagnets and found a thread that mentioned using resistors with A/C power.
The thread was on this forum but I can't find it now.
I am guessing that the...
There is a post on this forum stating that the insulation should be left on the wire to prevent a short circuit thus making the electromagnet ineffective. Lost the link and can't find it now.
But I am finding multiple articles on the internet that are using bare wire.
Ex of bare...
Homework Statement
scientific notation
I have a problem that displays the 4th root of the square root of 5.2 x 10 to the -9th power
Homework Equations
4 . .... ... ... -9
... sq rt of 5.2 X 10
4 -9
sq rt of 5.2 X 10
The Attempt at a Solution
The answer I...
Induced voltage(Yellow) is 180' in opposite to applied(Red) voltage. Current(Blue) is 90' lagged in this picture.
If the current is less than 90' lagged, does the current's sine wave shift alone, or does the induced voltage wave shift as well?
Does the induced voltage wave ever become less...
I see in my book how half the power is at one polarity and then 90' later it's at the opposite polarity. In regards to the relation of current vs. voltage. So the net result is zero power.
The picture shows how the induced voltage is 180' shifted from the applied voltage.
My question is, if...