![]() Field lines start from a positive charge and end on a negative charge.Some important general properties of field lines are Field lines around a system of a positive and -ive charge clearly show the mutual attraction between them as shown below in the figure.Field lines around the system of two +ive charges give a different picture and describe the mutual repulsion between them.These two figure given above shows how to draw field lines for a single charge (+ive and -ive) Electric Field Lines for Configurations of Two or More Charges For a negative charge, they are radially inwards as shown below in the figure.Field lines of a single +ive charge point radially outwards.The field lines should never cross each other.įield Lines due to some charge configurations For a positive charge.The number of field lines depends on the magnitude of the electric charge.When the field is stronger, the field lines are closer to each other.It must be noted that for each location, the electric field vectors point tangent to the direction of the electric field lines at any given point.So we can draw electric field vectors at each point in space around the charge and join them to form the lines. The field line begins at the +ive charge and ends either at the -ive charge or at infinity.Rules for Drawing Electric Field lines Patterns A field line or electric line of force can be considered as the path along which a small positive test charge would move if we let it move freely along the path.Magnitude is strong near the center where the electric field lines are close together, and it becomes weak as ve move farther outwards, where they are relatively apart or they have less density.In the region where the density of these lines is low, the electric field has lower strength. This means that electric field strength due to the charged body is more in the region where the density of field lines is high. The magnitude of the field is indicated by the density of the lines. ![]() The relative spacing between lines provides an indication of the electric field strength at that point. Field-line in general is a curve drawn in such a way that the tangent to it at each point in the direction of the net field at that point.ĭefinition: An electric field line is an imaginary line or curve drawn over an empty space region such that its tangent at each position, points in the direction of the electric field vector at this position.An electric field line is an imaginary line drawn in such a way that its direction at any point is the same as the direction of the field at that point.Connecting up these vectors to form a line is a nice way to represent the electric field. ![]()
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