Concept explainers
Suppose the particle travels from point W to point Y along the path WXZY as shown
1. Compare the work done by the electric field when the particle travels from point W to point X to that done when the particle travels from point Z to point Y. Explain
What is the total work done on the particle by the electric field as it moves along the path WXZY?
2. Suppose the particle travels from W to Y along the arc shown. Is the work done on the particle by the electric field positive, negative, or zero? Explain using force and displacement vectors.
3. Suppose the particle travels along the straight path WY. Is the work done on the particle by the electric field positive, negative, or Zero? Explain using force and displacement vectors. (Hint: Compare the work done along the first half of the path to the work done along the second half.)
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