Ohm Vs. Kirchhoff

Ohm's law states that voltage has direct relation to current. When voltage is high, so is the current and vice versa. Also, resistance is stays the same in different circuits. These concepts can be explained by the simple formula : V=R*I. One can easily remember this formula by drawing a triangle, placing V at the top and R and I on the bottom.

Kirchhoff's law is used for complex circuits and uses lots of formulas that correspond to either series circuit or parallel circuit to determine current, voltage, and resistance. In a series circuit, current (I) can be expressed as I(t) = I(1) = I(2) = I(3) =...=I(n). This means that throughout a series circuit, the current stays constant. In a parallel circuit, current is expressed as I(t) = I(1) + I(2) + I(3) +...+I(n). The current in a parallel circuit is the sum of all the loads' currents.
Voltage, in a series circuit, is expressed as V(t) + V(1) + V(2) + V(3) +...+V(n). In a parallel circuit, voltage is expressed as V(t) = V(1) = V(2) = V(3) =...=V(n). However, resistance is a bit different. In a series circuit, resistance is calculated as R(t) = R(1) + R(2) + R(3) + ...+R(n). In a parallel circuit, resistance is expressed as 1/R(t) = 1/R(1) + 1/R(2) + 1/R(3) +...+ 1/R(n).