r= E over R+r solve for r?
r= E over R+r solve for r
- Anonymous8 years agoBest Answer
r = E/(R+r) ---> r^2 + Rr - E = 0 , and use the quadratic formula to solve
- Anonymous5 years ago
- breznauLv 43 years ago
I=E/(R+r) multiply the two sides via (R+r) I(R+r) = E divide via I R+r = E/I subtract r R = E/I - r ^_^ M4tr!x - Yeah, yet I further various pointless steps, i become basically having a brainfart, so I made it less complicated