Electric Potential and Work Quiz

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Questions and Answers

What is the potential difference $V_A - V_B$ when a charged particle of 5C is moved, doing 103 J of work while losing 20 J of kinetic energy?

-6 V (correct)
6 V
-2 V
2 V

What is the potential difference between the points $(rac{3}{2}, rac{3}{2}, 0)$ and $(0, 0, rac{3}{rac{1}{2}})$ due to point charge Q at the origin?

$rac{KQ}{rac{3}{2}}$ (correct)
$rac{KQ}{(rac{3}{2}-3)}$
$rac{KQ}{3}$
Zero

How much work is done in carrying a charge of 3µC from point A to point C in rectangle ABCD with given charges?

2 J
3.5 J (correct)
1.5 J
2.5 J

What is the potential difference between points (1,2,0) and (-2,1,3) in the electric field $ extbf{E} = 2xi + 3j$?

<p>-3 V (A)</p> Signup and view all the answers

When a charged particle moves and loses both kinetic energy and work done, how can we represent the relationship involving potential difference?

<p>Work = ΔKE + q(V_A - V_B) (D)</p> Signup and view all the answers

Flashcards

Potential Difference (Problem 14)

The difference in electric potential between two points. It represents the work done per unit charge to move a charge from one point to another in an electric field.

Electric Potential (Problem 15)

The electric potential at a point in space is the amount of work required to bring a unit positive test charge from infinity to that point.

Work done in electric field (Problem 16)

The work done in moving a charge between two points within an electric field depends on the potential difference between the points and the charge being moved.

Electric Field and Potential Difference (Problem 17)

The potential difference between two points in an electric field is calculated by integrating the electric field along a path connecting the two points.