Cables in parallel

[hsharp]

A number of cables are tested for installation resistance. The highest individual value is 200M ohm and the lowest is 20Mohm. The measured value, when all cables are connected in parallel, will be?

A. great than 200M
B. 200M
C. Less than 20M
D. The sum of the individual values.

 

[tommy.dale]

A number of cables are tested for installation resistance. The highest individual value is 200M ohm and the lowest is 20Mohm. The measured value, when all cables are connected in parallel, will be?

A. great than 200M
B. 200M
C. Less than 20M
D. The sum of the individual values.

Or

E. prepare to be quizzed on what you think it will be lol

 

[Mork]

College question?

 

[Sintra]

Is this homework?

 

[Des 56]

Insulation resistance

What do you know of series and parallel circuits with regard resistance values

 

[KAS1]

What was the name of the chap doing the testing???

 

[Guitarist]

Is this homework?

If not, he has a strange hobby

 

[Knobhead]

Thought this would be an interesting power problem.

 

[GLENNSPARK]

wheres he gone?
surely he didn`t expect us to just give it to him (the answer that is)...

 

[Des 56]

Thought this would be an interesting power problem.

Should he not get a few brownie points for the title then Tony

I will give him a clue

3 of them answers are looking a bit suspect

 

[Sintra]

Gets on my nerves when people start a thread and then disappear after 10 minutes. :mad2:

 

[pencilpusher]

Utter laziness not to even have a pop at it and then disappear!

 

[GLENNSPARK]

Utter laziness not to even have a pop at it and then disappear!

`drop in centre` syndrome again i`m afraid

 

[44ALLAN]

Or

E. prepare to be quizzed on what you think it will be lol

F. Dump the 20meg cable and put it in storage to dry out for future reference then de-rate your mcb as it was probably oversized anyway.

F a). It's Insulation resistance not Installation

Good Luck.

 

[DNS1]

is it just me or does this question not actually make much sense?

 

[GLENNSPARK]

is it just me or does this question not actually make much sense?

well...you dont post a question..then just f**k off do you....lol..

 

[Stroppy]

Resistances in parallel? Come on, this is second year stuff!!

 

[chrish_1977]

Maybe he has seen the error of his ways and decided to hide

 

[Knobhead]

 

[Silly Sausage]

What about if your bypass wire is only a few microns thick?

 

[static zap]

Buy a cheap meter and try the practical approach,Maplins resistors !

 

[hsharp]

Sorry yes it is insulation.
The question is a C&G word for word.

 

[Silly Sausage]

Have you sussed the answer yet?

 

[Sintra]

Work it out what is the total resistance of 200 M ohms and 20 M ohms in parallel. This will answer your question.

 

[Richard Burns]

When working this out remember that you are measuring resistances in parallel.

The total resistance of resistors in parallel is XXXXer than the XXXXest?

 

[Silly Sausage]

Too many Xs there Rich!

 

[Richard Burns]

I am trying to be obtuse:ninja:, but I shouldn't have used four I should have used seven or something.:tongue3:

 

[Baker1988]

Come on mate I can't c why you don't know the answer to this

 

[hsharp]

the answer is a then

 

[Baker1988]

the answer is a then

Try again

 

[Sintra]

the answer is a then

Show your working out then please. Then we can assist from there.

 

[hsharp]

is it B, I am just learning

 

[Richard Burns]

one more go!

 

[Baker1988]

Show us your working out mate I'll give u a clue the answer starts with one of the first 4 letters of the alphabet

 

[hsharp]

what d

 

[Richard Burns]

OHhhh! last chance!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

 

[Sintra]

I give up. What's the point in guessing you need to know and understand the formula for resistances in parallel. You need to do a bit of work on this yourself rather than waiting for someone to give it to you on a plate.

 

[Baker1988]

Come on mate I can't c why you don't know the answer to this

come on pal if u look at my first post i told you the answer (c instead of see)

in a parellel circuit the total restistance is always lower then the lowest resistor so in this case the lowest is 20m so it will be lower then that.

if you are a trainee apply for the trainee section and we will all try to help you

 

[Richard Burns]

parallel resistors

total resistance of resistors in parallel is lower than the lowest individual value

 

[Plonker 3]

It really is worrying when the questions are multi choice, yet people still try and randomly guess rather than at least attempt to make a educated guess.