The Kirchhoff's first law `(Sigmai = 0)` and second law `(SigmaiR = SigmaE)`, where the symbols have their usual meanings, are respectively based on

The kirchoff's first law (sum i=0 ) and second law (sum iR=sum E) where the symbols have their usual meanings are respectively based on (A) Conservation of charge conservation of momentum (B) Conservation of energy conservation of charge (C) Conservation of momentum conservation of charge (D) Conservation of charge, conservation of energy

“Kirchhoff's first law (sumi = 0) and second law (sumiR=sumE) where symbols have their usual meanings, are, respectively, based on conservation of momentum and energy “ state whether this statement is true or false?

Show that j = sigmaE where symbols have their usual meanings.

Derive sigma = (n e^(2) tau)/(m) where the symbols have their usual meaning.

Show that alpha = beta/2 where symbols have their usual meaning.