Illuminance (part 2) formula explained and transposed

Lay out your revision page on illuminance formula exactly like this. Formula needed to calculate illuminance questions, explained, transposed all ways, what each letter stands for and each SI unit of measure given.

For formula sheets and detailed guides, look in the shop at

https://electricalstudent.org/shop/

BS7671 18th

Edition amendment 2 https://amzn.to/44pCl0a

On – Site Guide 18th Edition amendment 2 https://amzn.to/3YOnGKQ

Casio Scientific Calculator https://amzn.to/47NJNFe

Multi coloured pen https://amzn.to/3EcKWbT

15cm ruler https://amzn.to/44v0rXg

30cm ruler https://amzn.to/44q8ox1

Folding ruler https://amzn.to/45qJ7UP

Black writing pens https://amzn.to/3EdnxqI