ms/mod/ibis/view.php?id-5147095 4 Jump 1/2018 10:00 AM 76/100 Calculator 4 of 5

Question

ms/mod/ibis/view.php?id-5147095 4 Jump 1/2018 10:00 AM 76/100 Calculator 4 of 5 on Sapling Learning this question has been customized by Matteo Broccio at University of Pittsburgh A positive point charge moves through at a point where the value of the electric potential is negative. This point charge has instantaneousy O a positive electric potential energy and a negative kinetic energy O a negative electric potential energy and a negative kinetic energy O a zero electric potential energy and a zero kinetic energy O a negative electric potential energy and a positive kinetic energy a positive electric potential energy and a positive kinetic energy O

Explanation / Answer

In general, positive charge moves from higher potential (+ve) to lower potential (-ve).

Expression for potential energy:

V = - kq /r

As the separtion (r) decreases, the potential energy decreased.

In the given case, positive charge moves towards negative electric potential. Here, the kinetic energy of point charge increases and potential energy decreases.

Thus, the correct answer is,

a negative potential energy and positive kinetic energy.

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