Static Electric Field | Electrostatic Induction
Static Electric FieldWe know there are two types of charge present in nature (i) positive and (ii) negative charge. In positive charge, there is mainly deficiency of electrons and in a negative charge, there are excess of electrons. Now, we can simply understand the concepts of charge from a very basic example. Take a dry comb, comb your hair (which should be dry) two to three times, now take that comb near tiny pieces of paper, you will see that the paper pieces are getting attracted to the comb. This is the very basic example of electric charge and static electric field. Due to friction, there is a movement of electrons between comb and hair, so one of them gets positively charged and another one gets negatively charged and as the paper is neutral (i.e. not charged) they get attracted to the comb.
So, we can see that there is an attraction force works between a charged particle and neutral particle, it has been seen further that there is repulsion between two same charged particles and attraction between two oppositely charged particles. This happens due to the field created by a particle. This can be understood if we imagine a glowing bulb, the bulb can be taken as the charge and the visible light can be compared to static electric field, the characteristic of field is similar to the light in the sense that the intensity of the field is greater near the source and it fades as we move further from the source. Now from another point of view, we can say that static electric field is nothing but an intense space, in terms of power where work is done or needed to be done upon in presence of an electrically charged particle depending on the nature of the charged particle.