Pls can someone show me how to get from
VA=IR*w-(λ*w2) and w*= IR2/2λ (IR2=IR squared)
to
VA*=IR2/4λ (IR2= squared)
and
VA*=w*IR/2
Many thanks
just put w into the formula
VA
=IR* (IR/2λ)-[λ*(IR/2λ)^2]
=IR^2/2λ - IR^2/4λ
=IR^2/4 λ
Which can be rewritten as w*IR/2