Electric Field Around Two Negative Charges

Two negative charges of equal magnitude.

Electric field around two negative charges.

Note that the electric field is defined for a positive test charge q so that the field lines point away from a positive charge and toward a negative charge. If we change to the case where both charges arenegative we get the following result. An electric charge is a property of matter that causes two objects to attract or repel depending on their charges positive or negative. An object with an absence of net charge is referred to as neutral.

An electric field is a region of space around an electrically charged particle or object in which an electric charge would feel force. Electric field lines always extend from a positively charged object to a negatively charged object from a positively charged object to infinity or from infinity to a negatively charged object. Like charges repel each other and unlike charges attract each other. An isolated positive charge.

Charges of different magnitudes. See figure 2 see figure 2 the electric field strength is exactly proportional to the number of field lines per unit area since the magnitude of the electric field for a point charge is latex e k frac q r 2 latex and area is proportional to r 2. This force is repulsive because the two charges are positive and recall that two positive charges or two negative charges repel each other while a positive charge and a negative charge attract each other. An electric dipole one positive and one negative charge of equal magnitude.

Electric field lines never cross each other. Electric field lines are most dense around objects with the greatest amount of charge. An isolated negative charge. Sketch the electric field around the following arrangements of small charged objects.

Two positive charges of equal magnitude.