Physics 201- Introduction to Electricity & Magnetism
|September 23- Electrostatic Potentials|
potential energy and work
The diagram show a top view of a positively charged rod. Points, A, B, C, and D lie in a plane near the center of the rod. Points B and C and equidistant from the rod, as are points A and D.
A particle with a positive charge +q travels along
a straight line from point C to D. Is the work done by the electric
field (on the charged particle) positive, negative or zero? Explain
using a sketch that shows the electric force on the particle and the displacement
of the particle.
What about if it travels from D to C?
What about travelling from D to A along the curved
path shown in the handout?
What if we change the charge from +q to +1.7q?
How does the work done by the field change for the C to D and D to A paths?
How does the potential energy compare in each of
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