The main objective of this paper is to study on the fields, resultant forces, and the dielectric substances in biologic tissues. Additionally, to unveil the possible mechanism which affects on major biological activities were examined. In the scientific literature, there are many studies conducted with low frequency Electromagnetic Fields (MFs), Static Magnetic Fields (SMFs), and Pulsed Electromagnetic Fields (PEMFs). However, we face in some cases; merely electric fields may be effective on biological functions (around 10 kV/m). Parallel plate exposure system was chosen as a model in this paper. In order to overcome the difficulty of generating virtual homogenous low frequency ac (power frequencies) or dc fields, a pair of appropriately designed parallel plates exposure model may be mighty tool. In this study, an important assumption, with deriving an equation that possible explanation for heat rise in a living tissue, has been made. Consequently it has been assumed that the field E(loc) may be responsible both for the induced and oriented polarization.