Question

The top left diagram below shows a 1-C positive charge placed in a uniform external electric field. The electric field in which the charge is placed is represented by field lines (drawn in red), and the resulting electric force on the charge is represented by the blue vector. Suppose the 1-C charge is removed, and is replaced, in turn, by each of the charges shown in the other three diagrams below. Assuming that the external electric field remains the same, draw force vectors on each of the other charges to indicate both the magnitude and direction of the electric force on the charge. (Scroll down for two more diagrams.)

-1C

Answer 1

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