Electric Field Lines and Their Visualization
Learn about electric field lines, imaginary lines that help visualize the electric field in a region of space. Discover how to draw electric field lines, understand the relationship with charges, and explore typical electric field diagrams.
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Presentation Transcript
ELECTRIC FIELD LINES ELECTRIC FIELD LINES
Electric Field Lines Electric field lines are imaginary lines drawn through a region of space to help visual the electric field. The electric field lines are drawn so that a. The electric field is tangent to the line at any point. b. The field lines are closer together where the electric field strength is greater. If we know what the field vectors look like, we can extrapolate to the field lines.
Electric field lines, how to draw The electric field is created by charges. Draw field lines starting on positive charges (or infinity) and moving toward negative charges (or infinity). Draw the number of lines associated with a charge so it is proportional to the magnitude of the charge. At any point, the electric field has a unique direction, so field lines never intersect. Note: The motion of a charged particle is not necessarily along the electric field line!
More examples Three typical electric field diagrams. (a)A dipole. (b)Two identical charges. (c)Two charges with opposite signs and different magnitudes. Can you tell from the diagram which charge has the larger magnitude?
