Kirchoff’s First Law
(Kirchoff’s current law)
The sum of currents entering a node equals the sum of the currents exiting the node.
This law is based on Conservation of Charge.
Kirchoff’s Second Law
(Kirchoff’s voltage law)
The sum of voltages around a closed loop is zero.
for later
https://slehar.wordpress.com/2014/03/18/clifford-algebra-a-visual-introduction/