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FIRE SERVICE AND GENERAL FIRE SAFETY TOPICS => Technical Advice => Topic started by: Benzerari on November 08, 2008, 09:04:04 PM

Title: Easy Oms law calculator ?
Post by: Benzerari on November 08, 2008, 09:04:04 PM

http://www.diyalarmforum.com/ohms-law-calculator/

Probably you need to register in once to use it...

Enjoy

Title: Re: Easy Oms law calculator ?
Post by: smoke monkey on April 25, 2009, 01:38:21 AM

This is a pet hate of mine..Ohms Law is  Law..BUT what you mean is..there is a Formula which proves Ohms Law.

Ohms Law states that for a sample of metal at a constant temperature..the resistance along the piece of metal is constant.

The formula for Ohms Law is easy...V= I x R

Who needs a calculator ?


Whatever happend to people being able to do mental arithetic or simple maths ?

Im no maths genius but if i can do it anyone can.

Title: Re: Easy Oms law calculator ?
Post by: Galeon on April 25, 2009, 02:38:06 PM

The Americans spent serious time and money on a pen that would work in space , the Russians made do with a pencil , back to basics is the only way  ;D

Title: Re: Easy Oms law calculator ?
Post by: Thomas Brookes on April 26, 2009, 07:41:08 AM

Technology and Advances!!


We fear change!!!.

As long as you know how to calculate it, who cares if you use a table or a programme.

Does that mean we should all scrap computers and programmes for everything.

I used to do the wages on PAYE tables and spend all day doing it, it now takes me 5 mins to do, VAT when manually calculating it was at least a full days job now I can do it in a few mins.
Who on here still does not have a computer to do something at work, do you manually draw plans and as fitted drawings, I take it you all walk to jobs as why would you need a car or van when you can walk, what about battery drills hand drills work.

I just love it when people say we should all go back to the caveman times!.

I say give me a computer programme for everything, the more automated the better.

I was unsure if I should use my computer for this message or get a pidgeon to fly and deliver it.

Title: Re: Easy Oms law calculator ?
Post by: Galeon on April 26, 2009, 12:28:30 PM

Read my post again , nothing in your post is reflected in mine , don't waste good time and money when there is an easy fix , is all I said , you don't need an accounting package to do your vat , just a simple excel sheet .  ::).

Title: Re: Easy Oms law calculator ?
Post by: Wiz on April 27, 2009, 11:22:27 AM

Don't be too harsh about the link Benz provided. Take a look at it. It's pretty useful because it also brings Power into the calculations.

Just enter two knowns from I, V, R & P and the other two are calculated instantly!

I don't think even smoke monkey would be able to calculate all 4 from knowing just 2 so quickly :)