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3 Animations
efield-plot-02.iwp
Two charges (red and blue) are positioned on the x-axis and produce an electric field in the space surrounding them. A positive test charge (green) is initially located on the y-axis. Lines (black) from the red and blue charges to the position of the test charge are shown. Vectors representing the magnitude and direction of the fields of the red and blue charges and of the net field are shown at the position of the test charge. Running or stepping the animation forward will advance the horizontal position of the test charge in the given increment, and the E-field vectors will change accordingly. The vertical position of the test charge can also be moved by selecting a non-zero increment of Y-position. In addition, the initial coordinates of the test charge can be selected.
efield-plot-02a.iwp
A charge (red) is positioned at the origin. A positive test charge is represented by the black dot. A vector representing the magnitude and direction of the electric field of the red charge at the position of the test charge is shown. Running or stepping the animation will move the test charge across the screen, and the E-field vector will change accordingly. The direction of motion can be made horizontal or vertical in either direction by the appropriate choice of the X and Y motions: 1 = move horizontally (vertically) to the right (up) 0 = don't move -1= move horizontally (vertically) to the left (down) In addition, the initial coordinates of the test charge can be selected. For easier viewing, the vectors may be scaled to larger or smaller lengths by increasing or decreasing the vector scale factor.
efield-plot-02c.iwp
Two charges (red and blue) are positioned on the x-axis and produce an electric field in the space surrounding them. A positive test charge is represented by the green dot. Vectors representing the magnitude and direction of the fields of the red and blue charges and of the net field are shown at the position of the test charge. Running or stepping the animation will move the test charge down the screen, and the E-field vectors will change accordingly. The direction of motion can be made horizontal or vertical in either direction by the appropriate choice of the X and Y motions: 1 = move horizontally (vertically) to the right (up) 0 = don't move -1= move horizontally (vertically) to the left (down) In addition, the initial coordinates of the test charge can be selected. For easier viewing, the vectors may be scaled to larger or smaller lengths by increasing or decreasing the vector scale factor.