Electric field lines originate at positive charges and stop at negative charges. That follows from Gauss's law. You can draw the blue lines if you wish, but you have to be careful. Remember that the electric field points in the direction of the force on a positive test charge. A positive test charge placed between the plates will experience a repulsive force from the positive charges on the left and an attractive force from the negative charges on the right. So if you draw blue lines representing the electric field from the negative charges, they should point left to right, same as the red lines. In that case you might as well draw one set of lines and be done with it.annamal said:
The concept behind finding the electric field resulting from two infinite planes is based on the principle of superposition. According to this principle, the total electric field at a point is the sum of the individual electric fields created by each source charge.
The key equations used to calculate the electric field resulting from two infinite planes are Gauss's Law and Coulomb's Law. Gauss's Law states that the electric flux through a closed surface is proportional to the enclosed charge, while Coulomb's Law describes the force between two point charges.
The distance between the two infinite planes has a direct impact on the strength of the electric field. As the distance increases, the electric field decreases. This is because the electric field is inversely proportional to the distance squared according to Coulomb's Law.
The direction of the electric field resulting from two infinite planes is perpendicular to the planes and points away from the positively charged plane and towards the negatively charged plane. This is because the electric field lines always point from positive charges to negative charges.
Yes, the electric field resulting from two infinite planes can be negative. This occurs when the two planes have opposite charges, with the positively charged plane having a greater magnitude of charge. In this case, the electric field will be directed towards the negatively charged plane, resulting in a negative value.