how to solve this electric field lines chapter
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Answer:
Drawings using lines to represent electric fields around charged objects are very useful in visualizing field strength and direction. Since the electric field has both magnitude and direction, it is a vector. Like all vectors, the electric field can be represented by an arrow that has length proportional to its magnitude and that points in the correct direction. (We have used arrows extensively to represent force vectors, for example.)
Figure 1 shows two pictorial representations of the same electric field created by a positive point charge Q. Figure 1b shows the standard representation using continuous lines. Figure 1b shows numerous individual arrows with each arrow representing the force on a test charge q. Field lines are essentially a map of infinitesimal force vectors.
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LEARNING OBJECTIVES
By the end of this section, you will be able to:
Calculate the total force (magnitude and direction) exerted on a test charge from more than one charge
Describe an electric field diagram of a positive point charge; of a negative point charge with twice the magnitude of positive charge
Draw the electric field lines between two points of the same charge; between two points of opposite charge.