(electromagnetism)
,KIRCHOFF’S LAW OF CURRENT
KIRCHOFF’S law of current states that the algebraic sum of all current at any node
junction) in an electrical circuit is equal to zero or equivalently the sum of the curre
flowing into a node is equal to the sum of the currents flowing out of that node.
∑iin=∑iout
, Electric circuits which contains more than one source of emf, are solved
readily by the application of laws and theorems that relate the several
currents, emfs, and resistance voltages in such circuits. Two simple but
important laws that were first expressed by Gustav Kirchhoff, one for curre
and the other for voltages, are known as Kirchhoff’s laws. For d-c circuits,
are stated as follows: