Question

What is kirchoff s law???

Answer 1

There are two laws named for Kirchhoff.  The both concern electrical circuits.
Here they are in my own words:

1).  The sum of the voltage drops around any closed loop in a circuit is zero.

2).  The sum of the currents at any single point in a circuit is zero.

Answer 2

there are two
1 Kirchhoff's current law:
it states that the sum of all currents flowing in all conductors that meet at single point is zero..
2 Kirchhoff's voltage law:
it states that the algebraic sum of all voltages around any closed network is zero...