The drawing above shows a graph of a set of equipotential surfaces seen in cross
ID: 1952428 • Letter: T
Question
The drawing above shows a graph of a set of equipotential surfaces seen in cross section. Each is labeled according to its electric potential. A +2.8x10^-7 C point charge is placed at position A. Find the work that is done on the point charge by the electric force when it is moved (1) from A to B, and (2) from A to C (3) Find the magnitudeand directed of the electric field at position D.
I know from A-C that the work done is zero since the points do not change to a different surface. i just cannot figure out know to get the work from point A-B since it is on a different surface. Please Help!
The drawing above shows a graph of a set of equipotential surfaces seen in cross section. Each is labeled according to its electric potential. A +2.8x10^-7 C point charge is placed at position A. Find the work that is done on the point charge by the electric force when it is moved (1) from A to B, and (2) from A to C (3) Find the magnitudeand directed of the electric field at position D. I know from A-C that the work done is zero since the points do not change to a different surface. i just cannot figure out know to get the work from point A-B since it is on a different surface. Please Help!Explanation / Answer
To find the work done, just find the difference in voltages between the points, and multiply the difference by the charge in Coulombs (remember: 1 V = 1 J / 1 C) For example, the difference in voltage between A and B is +200 V. So, multiply +200V by +2.8*10^-7 C to find the work done.
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