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"Hey guys"

This is the part where I beg for help.

I rarely ask for help from you gaylords, because the truth is, the majority of you are idiots.
Anyway, that's the flattery out of the way...

Physics - the subject of joy. I'm stuck on this question.

It's worth 3 marks. Anyway;

"The resistance of a length of bare uniform resistance wire is 30 ohms. The length of wire is folded into the shape of a square and the ends soldered together as shown below

(a picture of a square with an ohmmeter connected to it) - [URL]http://firestorm.staghosting.com/image.jpg[/URL]

What value of resistance would the ohmmeter read if it is connected as shown at the mid-points of opposite sides to the square?
(You may ignore the resistance of the ohmmeter leads)"
***

Cheers for any help people - I'm honestly at a loss.
And merm, if you claim it's 600 joules, I will hit you.

Hey leave her alone Icky. You're boring her legs shut.

oh my god, I KNOW!!! It's like... physics, loada numbers and lines, dude.What a nerd. Bythe way, whats ya asl steph??

I can not beleive that all you talk about is this sorta junk, get a life, have some fun, i cant beleive you, talk about obssesed nerd

We don't have to argue, we just know it.





Also, I must remember the day that Azul said: "Hey Guys"

BWAAHHAHAHAahlshiwahnifpjwJG[OAF[GwdAAAHAiajsAISHajHAH

Whether you wanted something or not it still hilarifies me.

Funny - I originally said "I went for Biggles and Sheepy because everyone knows the Scots are the most intelligent".

But then;

a) I remembered that I'm Scottish and that I didn't know
b) I couldn't be bothered to go through the long process/argument which would inevitably lead to us winning anyway
c) It would be UNFAIR to those who tried.

Moral of the story: stick with the Scots.

Notorious Biggles wrote:
> 7.5 Ohms
>
> Resistances in parallel. 1/15 + 1/15 = 2/15. Invert. 15/2 = 7.5
>
> But then it's been about 10 years since I last did phyciscs or
> electronic engineering, so I take no responsibility.

SHEEPY wrote:
> That's the right answer.
***

At the end of the day, I went for this, because Biggles flies planes.

And it was spot on.
Excellent.

I just knew simply saying that "yeah, it'll stay 30 and stuff" wasn't worth 3 marks.
Whenever there's 3 marks, it practically always means calculations of some sort are needed.

Cheers.

I think the ohmmeter provides any voltage needed.

R = V x I
There is no resistance as there is no voltage and no current.

The answer you're looking for should be "As R = V x I, There is infinate resistance because there is no power supply so provide volts or current."

Forza wrote:
> Everything has a resistance whether there's emf or not.

Yup, the wire always has a measureable resistance