Electrical Symbols & Equations (Ohms law, Resistance (Rho), Resistivity, Mass, Weight

[a1]

I have been meaning to put together an A4 page of formulas and Equations etc, to make it easier for when I revise for my exams.

But, I have gone futher and done a whole webpage (took quite some time too) so that EVERYONE can benefit from it.

I hope you like it.

The words below are what's contained in that webpage:

ohms law, Resistance (Rho), Resistivity, Mass, Weight, Torque, Work (done), Power, Coulumb, Efficiency, Area, Magnetic Flux Density, Induced emf (e.m.f), Transformer Ratios

www.electricianforum.co.uk/electricalformulas.html

I have now added a "Printable version", Guys. I am too good to you aye.



Thank You. :x

 

[Nicky Tesla]

You missed the builders triangle. My brother in law swears by it.

One corner the word CHEAP

Another corner the word GOOD and QUICK in the other corner

ie you can have a cheap quick job but it wont be very good

ie you can have a good quick job but it wont be very cheap

ie you can have a cheap good job but it wont be very quick

He is a one man band, so to get extra men in will cost extra and working mad hours and weekends will also cost and quality suffers if time is priority.

 

[Apache]

Nice post admin

worth noting that f=mg g is a constant at 9.8ms-1 assuming you are working on earth...........

this is a useful site Online Conversion - Convert just about anything to anything else

 

[a1]

Nice post admin worth noting that f=mg g is a constant at 9.8ms-1 assuming you are working on earth...........

this is a useful site Online Conversion - Convert just about anything to anything else

I forgot to add onto it (webpage) about that, I will do it at a leter date...

9.81ms-

 

[Barx]

Good page mate, at a brill time too. I started writing a program for my phone to have all these on and do the calculations for you. Didn't know what stuff to put on it, now I have a list

 

[SPECIAL LOCATION]

er hum.. tut, tut Admin!

you forgot this one...

'Average No. of posts before thread drifts' = ((Sm x Np) / BCf) x SCf x (1/TCf).

where:-

[sm] - Subject mater- (graded 1..10, where 1=boring 10=interesting)

[Np] - Number of posters

i.e. standard formula 'Average No. of posts before thread drifts' = Sm x Np

but then you need to include the correction factors':-

[bCf] Beer correction factor = Np/average quantity of beer consumed by each posterGuiness DrinkGuiness Drink

[sCf] Spirits correction factor = average alcohol volume% per poster.Blushing

[TCf] Time correction factor = number of hours past midnight! :z :z

I believe this can be verified on Post #19 on this thread...

Single Point of Isolation - Page 2 - Electrician Forum

BlushingBlushingBlushing

; \ ]

 

[SPECIAL LOCATION]

nice page tho! Applaud SmileyApplaud Smiley

 

[nemesis]

Very nice page.

Unfortunately, you may want to look at the Force and Resistance parts, because the explanation of the quantities used does not correlate with the equations and also the Tranformer Ratios part needs looking at.

Hope this helps.

 

[Megaohm7]

I have been thumbing through my old notes with all these equations and it's still good to jog your memory on a few things .Guiness Drink

 

[a1]

Very nice page.Unfortunately, you may want to look at the Force and Resistance parts, because the explanation of the quantities used does not correlate with the equations and also the Tranformer Ratios part needs looking at.

Hope this helps.

Eh? They are from my college notes. Do elaborate.

 

[SPECIAL LOCATION]

Eh? They are from my college notes. Do elaborate.

I think one error is on...

ForceF=mg

Where:- V=Voltage (v), I=Current (A), g=acceleration due to gravity (ms

 

[a1]

Thanks Specs, That has been corrected, Sir.

 

[ABC Technical]

er hum.. tut, tut Admin!you forgot this one...

'Average No. of posts before thread drifts' = ((Sm x Np) / BCf) x SCf x (1/TCf).

where:-

[sm] - Subject mater- (graded 1..10, where 1=boring 10=interesting)

[Np] - Number of posters

i.e. standard formula 'Average No. of posts before thread drifts' = Sm x Np

but then you need to include the correction factors':-

[bCf] Beer correction factor = Np/average quantity of beer consumed by each posterGuiness DrinkGuiness Drink

[sCf] Spirits correction factor = average alcohol volume% per poster.Blushing

[TCf] Time correction factor = number of hours past midnight! :z :z

I believe this can be verified on Post #19 on this thread...

Single Point of Isolation - Page 2 - Electrician Forum

BlushingBlushingBlushing

; \ ]

Applaud SmileyApplaud SmileyApplaud SmileyGuiness DrinkGuiness Drink Very good specs. :^O

 

[a1]

I have now added a "Printable version", Guys. I am too good to you aye.

 

[Apache]

I have now added a "Printable version", Guys. I am too good to you aye.

I shall print a copy now, laminate it and put it on the fridge

 

[SPECIAL LOCATION]

I shall print a copy now, laminate it and put it on the fridge

ffs Patch....

stuff the ruddy formula....

go buy some fridge poetry m8! :|

formula belong in folders NOT fridges! X(

 

[Apache]

Twas said in jest Specs!

 

[a1]

Took me bloody ages to do all that. :_|

 

[Apache]

Took me bloody ages to do all that. :_|

And it really is lovely. I just don't have immediate need for it!

Wish I'd had it when I did my physics A level

Heck I'll 'scoob' you for your efforts

Happy?

 

[a1]

In that case - I will call off the Don's boys, who - incidently, were on their way around to your place.