b4/Kirchhoff's Law and Ohms' Law

Today we learned about Ohms law and Kirchoff's law. Ohm's law is that resistance equals to the potential difference divided by the current.

It can be shown by this equation: R=V/I

Kirchoff's Law is:
in a series circuit:
It=I1=I2=...In
Vt=V1+V2+...Vn
Rt=R1+R2+...Rn
in a parallel circuit:
It=I1+I2+..In
Vt=V1=V2=..Vn
1/Rt=1/R1+1.R2+..1/Rn