Examples of dot product :
1) Work done is the dot product of force and displacement
W =\(
\vec F.\,\vec S = FS\cos \theta
\) .
2) Power is the dot product of force and instantaneous velocity
Power P = \(
\vec F.\,\vec V = FV\cos \theta
\)
3) Magnetic Flux \(
\phi = \,\overrightarrow B \,.\,\overrightarrow A
\) etc.